diff --git a/tests/script/api/batchprepare.c b/tests/script/api/batchprepare.c
index bdaa4f717206d70f10bb1244932ec9373bdf83ad..5a11ec968f573487bdd63c9ace71a0c404134e59 100644
--- a/tests/script/api/batchprepare.c
+++ b/tests/script/api/batchprepare.c
@@ -63,31 +63,40 @@ typedef struct {
 } CaseCfg;
 
 CaseCfg gCase[] = {
-//  {"insert:MBSE1-FULL", tListLen(shortColList), shortColList, false, true, insertMBSETest1,  1, 10, 10, 0, 0, 10},
-//  {"insert:MBSE1-FULL", tListLen(shortColList), shortColList, false, true, insertMBSETest1, 10, 100, 10, 0, 0, 10},
-//  {"insert:MBSE1-FULL", tListLen(longColList), longColList, false, true, insertMBSETest1, 10, 10, 2, 0, 0, 1},
-//  {"insert:MBSE1-C012", tListLen(longColList), longColList, false, false, insertMBSETest1, 10, 10, 2, 12, 0, 1},
-//  {"insert:MBSE1-C002", tListLen(longColList), longColList, false, false, insertMBSETest1, 10, 10, 2, 2, 0, 1},
-//  {"insert:MBSE2-FULL", tListLen(longColList), longColList, false, true, insertMBSETest2, 10, 10, 2, 0, 0, 1},
-//  {"insert:MBSE2-C012", tListLen(longColList), longColList, false, false, insertMBSETest2, 10, 10, 2, 12, 0, 1},
-//  {"insert:MBSE2-C002", tListLen(longColList), longColList, false, false, insertMBSETest2, 10, 10, 2, 2, 0, 1},
-//  {"insert:MBME1-FULL", tListLen(longColList), longColList, false, true, insertMBMETest1, 10, 10, 2, 0, 0, 1},
-//  {"insert:MBME1-C012", tListLen(longColList), longColList, false, false, insertMBMETest1, 10, 10, 2, 12, 0, 1},
-//  {"insert:MBME1-C002", tListLen(longColList), longColList, false, false, insertMBMETest1, 10, 10, 2, 2, 0, 1},
-//  {"insert:MBME2-FULL", tListLen(longColList), longColList, false, true, insertMBMETest2, 10, 10, 2, 0, 0, 1},
-//  {"insert:MBME2-C012", tListLen(longColList), longColList, false, false, insertMBMETest2, 10, 10, 2, 12, 0, 1},
-//  {"insert:MBME2-C002", tListLen(longColList), longColList, false, false, insertMBMETest2, 10, 10, 2, 2, 0, 1},
-//  {"insert:MBME3-FULL", tListLen(longColList), longColList, false, true, insertMBMETest3, 10, 10, 2, 0, 0, 1},
-//  {"insert:MBME3-C012", tListLen(longColList), longColList, false, false, insertMBMETest3, 10, 10, 2, 12, 0, 1},
-//  {"insert:MBME3-C002", tListLen(longColList), longColList, false, false, insertMBMETest3, 10, 10, 2, 2, 0, 1},
-//  {"insert:MBME4-FULL", tListLen(longColList), longColList, false, true, insertMBMETest4, 10, 10, 2, 0, 0, 1},
-//  {"insert:MBME4-C012", tListLen(longColList), longColList, false, false, insertMBMETest4, 10, 10, 2, 12, 0, 1},
+#if 0
+  {"insert:MBSE1-FULL", tListLen(shortColList), shortColList, false, true, insertMBSETest1,  1, 10, 10, 0, 0, 10},
+  {"insert:MBSE1-FULL", tListLen(shortColList), shortColList, false, true, insertMBSETest1, 10, 100, 10, 0, 0, 10},
+  
+  {"insert:MBSE1-FULL", tListLen(longColList), longColList, false, true, insertMBSETest1, 10, 10, 2, 0, 0, 1},
+  {"insert:MBSE1-C012", tListLen(longColList), longColList, false, false, insertMBSETest1, 10, 10, 2, 12, 0, 1},
+  {"insert:MBSE1-C002", tListLen(longColList), longColList, false, false, insertMBSETest1, 10, 10, 2, 2, 0, 1},
+
+  {"insert:MBSE2-FULL", tListLen(longColList), longColList, false, true, insertMBSETest2, 10, 10, 2, 0, 0, 1},
+  {"insert:MBSE2-C012", tListLen(longColList), longColList, false, false, insertMBSETest2, 10, 10, 2, 12, 0, 1},
+  {"insert:MBSE2-C002", tListLen(longColList), longColList, false, false, insertMBSETest2, 10, 10, 2, 2, 0, 1},
+
+  {"insert:MBME1-FULL", tListLen(longColList), longColList, false, true, insertMBMETest1, 10, 10, 2, 0, 0, 1},
+  {"insert:MBME1-C012", tListLen(longColList), longColList, false, false, insertMBMETest1, 10, 10, 2, 12, 0, 1},
+  {"insert:MBME1-C002", tListLen(longColList), longColList, false, false, insertMBMETest1, 10, 10, 2, 2, 0, 1},
+
+  {"insert:MBME2-FULL", tListLen(longColList), longColList, false, true, insertMBMETest2, 10, 10, 2, 0, 0, 1},
+  {"insert:MBME2-C012", tListLen(longColList), longColList, false, false, insertMBMETest2, 10, 10, 2, 12, 0, 1},
+  {"insert:MBME2-C002", tListLen(longColList), longColList, false, false, insertMBMETest2, 10, 10, 2, 2, 0, 1},
+
+  {"insert:MBME3-FULL", tListLen(longColList), longColList, false, true, insertMBMETest3, 10, 10, 2, 0, 0, 1},
+  {"insert:MBME3-C012", tListLen(longColList), longColList, false, false, insertMBMETest3, 10, 10, 2, 12, 0, 1},
+  {"insert:MBME3-C002", tListLen(longColList), longColList, false, false, insertMBMETest3, 10, 10, 2, 2, 0, 1},
+#endif
+
+  {"insert:MBME4-FULL", tListLen(longColList), longColList, false, true, insertMBMETest4, 10, 10, 2, 0, 0, 1},
+  {"insert:MBME4-C012", tListLen(longColList), longColList, false, false, insertMBMETest4, 10, 10, 2, 12, 0, 1},
   {"insert:MBME4-C002", tListLen(longColList), longColList, false, false, insertMBMETest4, 10, 10, 2, 2, 0, 1},
 
 };
 
 CaseCfg *gCurCase = NULL;
-
+int32_t gTestNull = 1;
+bool gTestAutoCreate = false;
 
 int32_t taosGetTimeOfDay(struct timeval *tv) {
   return gettimeofday(tv, NULL);
@@ -704,8 +713,8 @@ int insertMBMETest4(TAOS_STMT *stmt) {
   return 0;
 }
 
-
-int stmt_scol_func1(TAOS_STMT *stmt) {
+#if 0
+int stmt_func1(TAOS_STMT *stmt) {
   struct {
       int64_t ts;
       int8_t b;
@@ -718,55 +727,74 @@ int stmt_scol_func1(TAOS_STMT *stmt) {
       char bin[40];
       char blob[80];
   } v = {0};
-  int32_t len[10] = {sizeof(v.ts), sizeof(v.v1), sizeof(v.v2), sizeof(v.f4), sizeof(v.bin), sizeof(v.bin)};
   
-  TAOS_BIND_v2 params[10];
+  TAOS_BIND params[10];
   params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
   params[0].buffer_length = sizeof(v.ts);
   params[0].buffer = &v.ts;
-  params[0].length = &len[0];
+  params[0].length = &params[0].buffer_length;
   params[0].is_null = NULL;
-  params[0].num = 1;
 
-  params[1].buffer_type = TSDB_DATA_TYPE_TINYINT;
-  params[1].buffer_length = sizeof(v.v1);
-  params[1].buffer = &v.v1;
-  params[1].length = &len[1];
+  params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
+  params[1].buffer_length = sizeof(v.b);
+  params[1].buffer = &v.b;
+  params[1].length = &params[1].buffer_length;
   params[1].is_null = NULL;
-  params[1].num = 1;
 
-  params[2].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-  params[2].buffer_length = sizeof(v.v2);
-  params[2].buffer = &v.v2;
-  params[2].length = &len[2];
+  params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
+  params[2].buffer_length = sizeof(v.v1);
+  params[2].buffer = &v.v1;
+  params[2].length = &params[2].buffer_length;
   params[2].is_null = NULL;
-  params[2].num = 1;
 
-  params[3].buffer_type = TSDB_DATA_TYPE_FLOAT;
-  params[3].buffer_length = sizeof(v.f4);
-  params[3].buffer = &v.f4;
-  params[3].length = &len[3];
+  params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
+  params[3].buffer_length = sizeof(v.v2);
+  params[3].buffer = &v.v2;
+  params[3].length = &params[3].buffer_length;
   params[3].is_null = NULL;
-  params[3].num = 1;
 
-  params[4].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[4].buffer_length = sizeof(v.bin);
-  params[4].buffer = v.bin;
-  params[4].length = &len[4];
+  params[4].buffer_type = TSDB_DATA_TYPE_INT;
+  params[4].buffer_length = sizeof(v.v4);
+  params[4].buffer = &v.v4;
+  params[4].length = &params[4].buffer_length;
   params[4].is_null = NULL;
-  params[4].num = 1;
 
-  params[5].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[5].buffer_length = sizeof(v.bin);
-  params[5].buffer = v.bin;
-  params[5].length = &len[5];
+  params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
+  params[5].buffer_length = sizeof(v.v8);
+  params[5].buffer = &v.v8;
+  params[5].length = &params[5].buffer_length;
   params[5].is_null = NULL;
-  params[5].num = 1;
 
-  char *sql = "insert into ? (ts, v1,v2,f4,bin,bin2) values(?,?,?,?,?,?)";
+  params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
+  params[6].buffer_length = sizeof(v.f4);
+  params[6].buffer = &v.f4;
+  params[6].length = &params[6].buffer_length;
+  params[6].is_null = NULL;
+
+  params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
+  params[7].buffer_length = sizeof(v.f8);
+  params[7].buffer = &v.f8;
+  params[7].length = &params[7].buffer_length;
+  params[7].is_null = NULL;
+
+  params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
+  params[8].buffer_length = sizeof(v.bin);
+  params[8].buffer = v.bin;
+  params[8].length = &params[8].buffer_length;
+  params[8].is_null = NULL;
+
+  params[9].buffer_type = TSDB_DATA_TYPE_BINARY;
+  params[9].buffer_length = sizeof(v.bin);
+  params[9].buffer = v.bin;
+  params[9].length = &params[9].buffer_length;
+  params[9].is_null = NULL;
+
+  int is_null = 1;
+
+  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
   if (code != 0){
-    printf("failed to execute taos_stmt_prepare. error:%s\n", taos_stmt_errstr(stmt));
+    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
   }
   
   for (int zz = 0; zz < 10; zz++) {
@@ -774,13 +802,14 @@ int stmt_scol_func1(TAOS_STMT *stmt) {
     sprintf(buf, "m%d", zz);
     code = taos_stmt_set_tbname(stmt, buf);
     if (code != 0){
-      printf("failed to execute taos_stmt_set_tbname. error:%s\n", taos_stmt_errstr(stmt));
-      exit(1);
+      printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
     }  
     v.ts = 1591060628000 + zz * 10;
     for (int i = 0; i < 10; ++i) {
       v.ts += 1;
-
+      for (int j = 1; j < 10; ++j) {
+        params[j].is_null = ((i == j) ? &is_null : 0);
+      }
       v.b = (int8_t)(i+zz*10) % 2;
       v.v1 = (int8_t)(i+zz*10);
       v.v2 = (int16_t)((i+zz*10) * 2);
@@ -789,7 +818,7 @@ int stmt_scol_func1(TAOS_STMT *stmt) {
       v.f4 = (float)((i+zz*10) * 40);
       v.f8 = (double)((i+zz*10) * 80);
       for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
-        v.bin[j] = (char)((i)%10 + '0');
+        v.bin[j] = (char)((i+zz)%10 + '0');
       }
 
       taos_stmt_bind_param(stmt, params);
@@ -798,7 +827,7 @@ int stmt_scol_func1(TAOS_STMT *stmt) {
   }
 
   if (taos_stmt_execute(stmt) != 0) {
-    printf("failed to execute insert statement, error:%s.\n", taos_stmt_errstr(stmt));
+    printf("failed to execute insert statement.\n");
     exit(1);
   }
 
@@ -806,7 +835,7 @@ int stmt_scol_func1(TAOS_STMT *stmt) {
 }
 
 
-int stmt_scol_func2(TAOS_STMT *stmt) {
+int stmt_func2(TAOS_STMT *stmt) {
   struct {
       int64_t ts;
       int8_t b;
@@ -820,628 +849,105 @@ int stmt_scol_func2(TAOS_STMT *stmt) {
       char blob[80];
   } v = {0};
   
-  TAOS_BIND_v2 params[10];
+  TAOS_BIND params[10];
   params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
   params[0].buffer_length = sizeof(v.ts);
   params[0].buffer = &v.ts;
   params[0].length = &params[0].buffer_length;
   params[0].is_null = NULL;
-  params[0].num = 1;
 
-  params[1].buffer_type = TSDB_DATA_TYPE_TINYINT;
-  params[1].buffer_length = sizeof(v.v1);
-  params[1].buffer = &v.v1;
+  params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
+  params[1].buffer_length = sizeof(v.b);
+  params[1].buffer = &v.b;
   params[1].length = &params[1].buffer_length;
   params[1].is_null = NULL;
-  params[1].num = 1;
 
-  params[2].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-  params[2].buffer_length = sizeof(v.v2);
-  params[2].buffer = &v.v2;
+  params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
+  params[2].buffer_length = sizeof(v.v1);
+  params[2].buffer = &v.v1;
   params[2].length = &params[2].buffer_length;
   params[2].is_null = NULL;
-  params[2].num = 1;
 
-  params[3].buffer_type = TSDB_DATA_TYPE_FLOAT;
-  params[3].buffer_length = sizeof(v.f4);
-  params[3].buffer = &v.f4;
+  params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
+  params[3].buffer_length = sizeof(v.v2);
+  params[3].buffer = &v.v2;
   params[3].length = &params[3].buffer_length;
   params[3].is_null = NULL;
-  params[3].num = 1;
 
-  params[4].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[4].buffer_length = sizeof(v.bin);
-  params[4].buffer = v.bin;
+  params[4].buffer_type = TSDB_DATA_TYPE_INT;
+  params[4].buffer_length = sizeof(v.v4);
+  params[4].buffer = &v.v4;
   params[4].length = &params[4].buffer_length;
   params[4].is_null = NULL;
-  params[4].num = 1;
 
-  params[5].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[5].buffer_length = sizeof(v.bin);
-  params[5].buffer = v.bin;
+  params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
+  params[5].buffer_length = sizeof(v.v8);
+  params[5].buffer = &v.v8;
   params[5].length = &params[5].buffer_length;
   params[5].is_null = NULL;
-  params[5].num = 1;
-
-  char *sql = "insert into m0 (ts, v1,v2,f4,bin,bin2) values(?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-  
-  for (int zz = 0; zz < 10; zz++) {
-    v.ts = 1591060628000 + zz * 10;
-    for (int i = 0; i < 10; ++i) {
-      v.ts += 1;
-
-      v.b = (int8_t)(i+zz*10) % 2;
-      v.v1 = (int8_t)(i+zz*10);
-      v.v2 = (int16_t)((i+zz*10) * 2);
-      v.v4 = (int32_t)((i+zz*10) * 4);
-      v.v8 = (int64_t)((i+zz*10) * 8);
-      v.f4 = (float)((i+zz*10) * 40);
-      v.f8 = (double)((i+zz*10) * 80);
-      for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
-        v.bin[j] = (char)((i)%10 + '0');
-      }
-
-      taos_stmt_bind_param(stmt, params);
-      taos_stmt_add_batch(stmt);
-    }
-  }
-
-  if (taos_stmt_execute(stmt) != 0) {
-    printf("failed to execute insert statement.\n");
-    exit(1);
-  }
-
-  return 0;
-}
-
-
-
-
-//300 tables 60 records
-int stmt_scol_func3(TAOS_STMT *stmt) {
-  struct {
-      int64_t *ts;
-      int8_t b[60];
-      int8_t v1[60];
-      int16_t v2[60];
-      int32_t v4[60];
-      int64_t v8[60];
-      float f4[60];
-      double f8[60];
-      char bin[60][40];
-  } v = {0};
-
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 900000 * 60);
-  
-  int *lb = taosMemoryMalloc(60 * sizeof(int));
-  
-  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 900000*10);
-  char* is_null = taosMemoryMalloc(sizeof(char) * 60);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 60);
-
-  for (int i = 0; i < 60; ++i) {
-    lb[i] = 40;
-    no_null[i] = 0;
-    is_null[i] = (i % 10 == 2) ? 1 : 0;
-    v.b[i] = (int8_t)(i % 2);
-    v.v1[i] = (int8_t)((i+1) % 2);
-    v.v2[i] = (int16_t)i;
-    v.v4[i] = (int32_t)(i+1);
-    v.v8[i] = (int64_t)(i+2);
-    v.f4[i] = (float)(i+3);
-    v.f8[i] = (double)(i+4);
-    memset(v.bin[i], '0'+i%10, 40);
-  }
-  
-  for (int i = 0; i < 9000000; i+=10) {
-    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-    params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[10*i/10];
-    params[i+0].length = NULL;
-    params[i+0].is_null = no_null;
-    params[i+0].num = 10;
-    
-    params[i+1].buffer_type = TSDB_DATA_TYPE_TINYINT;
-    params[i+1].buffer_length = sizeof(int8_t);
-    params[i+1].buffer = v.v1;
-    params[i+1].length = NULL;
-    params[i+1].is_null = no_null;
-    params[i+1].num = 10;
-
-    params[i+2].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    params[i+2].buffer_length = sizeof(int16_t);
-    params[i+2].buffer = v.v2;
-    params[i+2].length = NULL;
-    params[i+2].is_null = no_null;
-    params[i+2].num = 10;
 
-    params[i+3].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    params[i+3].buffer_length = sizeof(float);
-    params[i+3].buffer = v.f4;
-    params[i+3].length = NULL;
-    params[i+3].is_null = no_null;
-    params[i+3].num = 10;
+  params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
+  params[6].buffer_length = sizeof(v.f4);
+  params[6].buffer = &v.f4;
+  params[6].length = &params[6].buffer_length;
+  params[6].is_null = NULL;
 
-    params[i+4].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+4].buffer_length = 40;
-    params[i+4].buffer = v.bin;
-    params[i+4].length = lb;
-    params[i+4].is_null = no_null;
-    params[i+4].num = 10;
+  params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
+  params[7].buffer_length = sizeof(v.f8);
+  params[7].buffer = &v.f8;
+  params[7].length = &params[7].buffer_length;
+  params[7].is_null = NULL;
 
-    params[i+5].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+5].buffer_length = 40;
-    params[i+5].buffer = v.bin;
-    params[i+5].length = lb;
-    params[i+5].is_null = no_null;
-    params[i+5].num = 10;
-    
-  }
+  params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
+  params[8].buffer_length = sizeof(v.bin);
+  params[8].buffer = v.bin;
+  params[8].length = &params[8].buffer_length;
+  params[8].is_null = NULL;
 
-  int64_t tts = 1591060628000;
-  for (int i = 0; i < 54000000; ++i) {
-    v.ts[i] = tts + i;
-  }
+  params[9].buffer_type = TSDB_DATA_TYPE_BINARY;
+  params[9].buffer_length = sizeof(v.bin);
+  params[9].buffer = v.bin;
+  params[9].length = &params[9].buffer_length;
+  params[9].is_null = NULL;
 
-  int64_t starttime = taosGetTimestampUs();
+  int is_null = 1;
 
-  char *sql = "insert into ? (ts, v1,v2,f4,bin,bin2) values(?,?,?,?,?,?)";
+  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
   if (code != 0){
     printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
   }
 
-  int id = 0;
-  for (int l = 0; l < 2; l++) {
-    for (int zz = 0; zz < 300; zz++) {
+  for (int l = 0; l < 100; l++) {
+    for (int zz = 0; zz < 10; zz++) {
       char buf[32];
       sprintf(buf, "m%d", zz);
       code = taos_stmt_set_tbname(stmt, buf);
       if (code != 0){
         printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
       }  
+      v.ts = 1591060628000 + zz * 100 * l;
+      for (int i = 0; i < zz; ++i) {
+        v.ts += 1;
+        for (int j = 1; j < 10; ++j) {
+          params[j].is_null = ((i == j) ? &is_null : 0);
+        }
+        v.b = (int8_t)(i+zz*10) % 2;
+        v.v1 = (int8_t)(i+zz*10);
+        v.v2 = (int16_t)((i+zz*10) * 2);
+        v.v4 = (int32_t)((i+zz*10) * 4);
+        v.v8 = (int64_t)((i+zz*10) * 8);
+        v.f4 = (float)((i+zz*10) * 40);
+        v.f8 = (double)((i+zz*10) * 80);
+        for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
+          v.bin[j] = (char)((i+zz)%10 + '0');
+        }
 
-      taos_stmt_bind_param_batch(stmt, params + id * 10);
-      taos_stmt_add_batch(stmt);
+        taos_stmt_bind_param(stmt, params);
+        taos_stmt_add_batch(stmt);
+      }
     }
- 
-    if (taos_stmt_execute(stmt) != 0) {
-      printf("failed to execute insert statement.\n");
-      exit(1);
-    }
-
-    ++id;
-  }
-
-  int64_t endtime = taosGetTimestampUs();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
-
-  taosMemoryFree(v.ts);  
-  taosMemoryFree(lb);
-  taosMemoryFree(params);
-  taosMemoryFree(is_null);
-  taosMemoryFree(no_null);
-
-  return 0;
-}
-
-
-
-//10 tables 10 records single column bind
-int stmt_scol_func4(TAOS_STMT *stmt) {
-  struct {
-      int64_t *ts;
-      int8_t b[60];
-      int8_t v1[60];
-      int16_t v2[60];
-      int32_t v4[60];
-      int64_t v8[60];
-      float f4[60];
-      double f8[60];
-      char bin[60][40];
-  } v = {0};
-
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 1000 * 60);
-  
-  int *lb = taosMemoryMalloc(60 * sizeof(int));
-  
-  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1000*10);
-  char* is_null = taosMemoryMalloc(sizeof(char) * 60);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 60);
-
-  for (int i = 0; i < 60; ++i) {
-    lb[i] = 40;
-    no_null[i] = 0;
-    is_null[i] = (i % 10 == 2) ? 1 : 0;
-    v.b[i] = (int8_t)(i % 2);
-    v.v1[i] = (int8_t)((i+1) % 2);
-    v.v2[i] = (int16_t)i;
-    v.v4[i] = (int32_t)(i+1);
-    v.v8[i] = (int64_t)(i+2);
-    v.f4[i] = (float)(i+3);
-    v.f8[i] = (double)(i+4);
-    memset(v.bin[i], '0'+i%10, 40);
-  }
-  
-  for (int i = 0; i < 10000; i+=10) {
-    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-    params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[10*i/10];
-    params[i+0].length = NULL;
-    params[i+0].is_null = no_null;
-    params[i+0].num = 2;
-    
-    params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
-    params[i+1].buffer_length = sizeof(int8_t);
-    params[i+1].buffer = v.b;
-    params[i+1].length = NULL;
-    params[i+1].is_null = no_null;
-    params[i+1].num = 2;
-
-    params[i+2].buffer_type = TSDB_DATA_TYPE_INT;
-    params[i+2].buffer_length = sizeof(int32_t);
-    params[i+2].buffer = v.v4;
-    params[i+2].length = NULL;
-    params[i+2].is_null = no_null;
-    params[i+2].num = 2;
-
-    params[i+3].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    params[i+3].buffer_length = sizeof(int64_t);
-    params[i+3].buffer = v.v8;
-    params[i+3].length = NULL;
-    params[i+3].is_null = no_null;
-    params[i+3].num = 2;
-
-    params[i+4].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    params[i+4].buffer_length = sizeof(double);
-    params[i+4].buffer = v.f8;
-    params[i+4].length = NULL;
-    params[i+4].is_null = no_null;
-    params[i+4].num = 2;
-  }
-
-  int64_t tts = 1591060628000;
-  for (int i = 0; i < 60000; ++i) {
-    v.ts[i] = tts + i;
-  }
-
-  int64_t starttime = taosGetTimestampUs();
-
-  char *sql = "insert into ? (ts,b,v4,v8,f8) values(?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-
-  int id = 0;
-  for (int l = 0; l < 10; l++) {
-    for (int zz = 0; zz < 10; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-
-      for (int col=0; col < 10; ++col) {
-        taos_stmt_bind_single_param_batch(stmt, params + id++, col);
-      }
-      
-      taos_stmt_add_batch(stmt);
-    }
- 
-    if (taos_stmt_execute(stmt) != 0) {
-      printf("failed to execute insert statement.\n");
-      exit(1);
-    }
-  }
-
-  int64_t endtime = taosGetTimestampUs();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
-
-  taosMemoryFree(v.ts);  
-  taosMemoryFree(lb);
-  taosMemoryFree(params);
-  taosMemoryFree(is_null);
-  taosMemoryFree(no_null);
-
-  return 0;
-}
-
-
-
-
-
-//1 tables 20 records
-int stmt_scol_func5(TAOS_STMT *stmt) {
-  int32_t rowNum = gCurCase->rowNum;
-  int32_t bindRowNum = gCurCase->bindRowNum;
-  int32_t bindColNum = gCurCase->bindColNum;
-  int32_t nullNum = gCurCase->bindNullNum;
-  BindData data = {0};
-  prepareData(&data);
-  
-  int64_t starttime = taosGetTimestampUs();
-
-  char *sql = "insert into ? (ts, v1,v2,f4,bin,bin2) values(?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-
-  int id = 0;
-  for (int b = 0; b < (rowNum/bindRowNum); b++) {
-  //for (int b = 0; b < 2; b++) {
-    for (int zz = 0; zz < 10; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-
-      taos_stmt_bind_param_batch(stmt, data.pBind + b*bindColNum);
-      taos_stmt_add_batch(stmt);
-    }
- 
-    if (taos_stmt_execute(stmt) != 0) {
-      printf("failed to execute insert statement.\n");
-      exit(1);
-    }
-
-    ++id;
-  }
-
-  int64_t endtime = taosGetTimestampUs();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", rowNum, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
-
-  destroyData(&data);
-  
-  return 0;
-}
-
-
-#if 0
-
-
-int stmt_func1(TAOS_STMT *stmt) {
-  struct {
-      int64_t ts;
-      int8_t b;
-      int8_t v1;
-      int16_t v2;
-      int32_t v4;
-      int64_t v8;
-      float f4;
-      double f8;
-      char bin[40];
-      char blob[80];
-  } v = {0};
-  
-  TAOS_BIND params[10];
-  params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-  params[0].buffer_length = sizeof(v.ts);
-  params[0].buffer = &v.ts;
-  params[0].length = &params[0].buffer_length;
-  params[0].is_null = NULL;
-
-  params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
-  params[1].buffer_length = sizeof(v.b);
-  params[1].buffer = &v.b;
-  params[1].length = &params[1].buffer_length;
-  params[1].is_null = NULL;
-
-  params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-  params[2].buffer_length = sizeof(v.v1);
-  params[2].buffer = &v.v1;
-  params[2].length = &params[2].buffer_length;
-  params[2].is_null = NULL;
-
-  params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-  params[3].buffer_length = sizeof(v.v2);
-  params[3].buffer = &v.v2;
-  params[3].length = &params[3].buffer_length;
-  params[3].is_null = NULL;
-
-  params[4].buffer_type = TSDB_DATA_TYPE_INT;
-  params[4].buffer_length = sizeof(v.v4);
-  params[4].buffer = &v.v4;
-  params[4].length = &params[4].buffer_length;
-  params[4].is_null = NULL;
-
-  params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
-  params[5].buffer_length = sizeof(v.v8);
-  params[5].buffer = &v.v8;
-  params[5].length = &params[5].buffer_length;
-  params[5].is_null = NULL;
-
-  params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
-  params[6].buffer_length = sizeof(v.f4);
-  params[6].buffer = &v.f4;
-  params[6].length = &params[6].buffer_length;
-  params[6].is_null = NULL;
-
-  params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-  params[7].buffer_length = sizeof(v.f8);
-  params[7].buffer = &v.f8;
-  params[7].length = &params[7].buffer_length;
-  params[7].is_null = NULL;
-
-  params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[8].buffer_length = sizeof(v.bin);
-  params[8].buffer = v.bin;
-  params[8].length = &params[8].buffer_length;
-  params[8].is_null = NULL;
-
-  params[9].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[9].buffer_length = sizeof(v.bin);
-  params[9].buffer = v.bin;
-  params[9].length = &params[9].buffer_length;
-  params[9].is_null = NULL;
-
-  int is_null = 1;
-
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-  
-  for (int zz = 0; zz < 10; zz++) {
-    char buf[32];
-    sprintf(buf, "m%d", zz);
-    code = taos_stmt_set_tbname(stmt, buf);
-    if (code != 0){
-      printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-    }  
-    v.ts = 1591060628000 + zz * 10;
-    for (int i = 0; i < 10; ++i) {
-      v.ts += 1;
-      for (int j = 1; j < 10; ++j) {
-        params[j].is_null = ((i == j) ? &is_null : 0);
-      }
-      v.b = (int8_t)(i+zz*10) % 2;
-      v.v1 = (int8_t)(i+zz*10);
-      v.v2 = (int16_t)((i+zz*10) * 2);
-      v.v4 = (int32_t)((i+zz*10) * 4);
-      v.v8 = (int64_t)((i+zz*10) * 8);
-      v.f4 = (float)((i+zz*10) * 40);
-      v.f8 = (double)((i+zz*10) * 80);
-      for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
-        v.bin[j] = (char)((i+zz)%10 + '0');
-      }
-
-      taos_stmt_bind_param(stmt, params);
-      taos_stmt_add_batch(stmt);
-    }
-  }
-
-  if (taos_stmt_execute(stmt) != 0) {
-    printf("failed to execute insert statement.\n");
-    exit(1);
-  }
-
-  return 0;
-}
-
-
-int stmt_func2(TAOS_STMT *stmt) {
-  struct {
-      int64_t ts;
-      int8_t b;
-      int8_t v1;
-      int16_t v2;
-      int32_t v4;
-      int64_t v8;
-      float f4;
-      double f8;
-      char bin[40];
-      char blob[80];
-  } v = {0};
-  
-  TAOS_BIND params[10];
-  params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-  params[0].buffer_length = sizeof(v.ts);
-  params[0].buffer = &v.ts;
-  params[0].length = &params[0].buffer_length;
-  params[0].is_null = NULL;
-
-  params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
-  params[1].buffer_length = sizeof(v.b);
-  params[1].buffer = &v.b;
-  params[1].length = &params[1].buffer_length;
-  params[1].is_null = NULL;
-
-  params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-  params[2].buffer_length = sizeof(v.v1);
-  params[2].buffer = &v.v1;
-  params[2].length = &params[2].buffer_length;
-  params[2].is_null = NULL;
-
-  params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-  params[3].buffer_length = sizeof(v.v2);
-  params[3].buffer = &v.v2;
-  params[3].length = &params[3].buffer_length;
-  params[3].is_null = NULL;
-
-  params[4].buffer_type = TSDB_DATA_TYPE_INT;
-  params[4].buffer_length = sizeof(v.v4);
-  params[4].buffer = &v.v4;
-  params[4].length = &params[4].buffer_length;
-  params[4].is_null = NULL;
-
-  params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
-  params[5].buffer_length = sizeof(v.v8);
-  params[5].buffer = &v.v8;
-  params[5].length = &params[5].buffer_length;
-  params[5].is_null = NULL;
-
-  params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
-  params[6].buffer_length = sizeof(v.f4);
-  params[6].buffer = &v.f4;
-  params[6].length = &params[6].buffer_length;
-  params[6].is_null = NULL;
-
-  params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-  params[7].buffer_length = sizeof(v.f8);
-  params[7].buffer = &v.f8;
-  params[7].length = &params[7].buffer_length;
-  params[7].is_null = NULL;
-
-  params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[8].buffer_length = sizeof(v.bin);
-  params[8].buffer = v.bin;
-  params[8].length = &params[8].buffer_length;
-  params[8].is_null = NULL;
-
-  params[9].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[9].buffer_length = sizeof(v.bin);
-  params[9].buffer = v.bin;
-  params[9].length = &params[9].buffer_length;
-  params[9].is_null = NULL;
-
-  int is_null = 1;
-
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-
-  for (int l = 0; l < 100; l++) {
-    for (int zz = 0; zz < 10; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-      v.ts = 1591060628000 + zz * 100 * l;
-      for (int i = 0; i < zz; ++i) {
-        v.ts += 1;
-        for (int j = 1; j < 10; ++j) {
-          params[j].is_null = ((i == j) ? &is_null : 0);
-        }
-        v.b = (int8_t)(i+zz*10) % 2;
-        v.v1 = (int8_t)(i+zz*10);
-        v.v2 = (int16_t)((i+zz*10) * 2);
-        v.v4 = (int32_t)((i+zz*10) * 4);
-        v.v8 = (int64_t)((i+zz*10) * 8);
-        v.f4 = (float)((i+zz*10) * 40);
-        v.f8 = (double)((i+zz*10) * 80);
-        for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
-          v.bin[j] = (char)((i+zz)%10 + '0');
-        }
-
-        taos_stmt_bind_param(stmt, params);
-        taos_stmt_add_batch(stmt);
-      }
-    }
-
+
     if (taos_stmt_execute(stmt) != 0) {
       printf("failed to execute insert statement.\n");
       exit(1);
@@ -1509,294 +1015,81 @@ int stmt_func3(TAOS_STMT *stmt) {
 
   params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
   params[6].buffer_length = sizeof(v.f4);
-  params[6].buffer = &v.f4;
-  params[6].length = &params[6].buffer_length;
-  params[6].is_null = NULL;
-
-  params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-  params[7].buffer_length = sizeof(v.f8);
-  params[7].buffer = &v.f8;
-  params[7].length = &params[7].buffer_length;
-  params[7].is_null = NULL;
-
-  params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[8].buffer_length = sizeof(v.bin);
-  params[8].buffer = v.bin;
-  params[8].length = &params[8].buffer_length;
-  params[8].is_null = NULL;
-
-  params[9].buffer_type = TSDB_DATA_TYPE_BINARY;
-  params[9].buffer_length = sizeof(v.bin);
-  params[9].buffer = v.bin;
-  params[9].length = &params[9].buffer_length;
-  params[9].is_null = NULL;
-
-  int is_null = 1;
-
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-
-  for (int l = 0; l < 100; l++) {
-    for (int zz = 0; zz < 10; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-      v.ts = 1591060628000 + zz * 100 * l;
-      for (int i = 0; i < zz; ++i) {
-        v.ts += 1;
-        for (int j = 1; j < 10; ++j) {
-          params[j].is_null = ((i == j) ? &is_null : 0);
-        }
-        v.b = (int8_t)(i+zz*10) % 2;
-        v.v1 = (int8_t)(i+zz*10);
-        v.v2 = (int16_t)((i+zz*10) * 2);
-        v.v4 = (int32_t)((i+zz*10) * 4);
-        v.v8 = (int64_t)((i+zz*10) * 8);
-        v.f4 = (float)((i+zz*10) * 40);
-        v.f8 = (double)((i+zz*10) * 80);
-        for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
-          v.bin[j] = (char)((i+zz)%10 + '0');
-        }
-
-        taos_stmt_bind_param(stmt, params);
-        taos_stmt_add_batch(stmt);
-      }
-    }
-  }
-
-  
-  if (taos_stmt_execute(stmt) != 0) {
-    printf("failed to execute insert statement.\n");
-    exit(1);
-  }
-
-
-  return 0;
-}
-
-
-
-//1 tables 10 records
-int stmt_funcb_autoctb1(TAOS_STMT *stmt) {
-  struct {
-      int64_t *ts;
-      int8_t b[10];
-      int8_t v1[10];
-      int16_t v2[10];
-      int32_t v4[10];
-      int64_t v8[10];
-      float f4[10];
-      double f8[10];
-      char bin[10][40];
-  } v = {0};
-
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 1 * 10);
-  
-  int *lb = taosMemoryMalloc(10 * sizeof(int));
-
-  TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
-
-//  int one_null = 1;
-  int one_not_null = 0;
-  
-  char* is_null = taosMemoryMalloc(sizeof(char) * 10);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 10);
-
-  for (int i = 0; i < 10; ++i) {
-    lb[i] = 40;
-    no_null[i] = 0;
-    is_null[i] = (i % 10 == 2) ? 1 : 0;
-    v.b[i] = (int8_t)(i % 2);
-    v.v1[i] = (int8_t)((i+1) % 2);
-    v.v2[i] = (int16_t)i;
-    v.v4[i] = (int32_t)(i+1);
-    v.v8[i] = (int64_t)(i+2);
-    v.f4[i] = (float)(i+3);
-    v.f8[i] = (double)(i+4);
-    memset(v.bin[i], '0'+i%10, 40);
-  }
-  
-  for (int i = 0; i < 10; i+=10) {
-    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-    params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[10*i/10];
-    params[i+0].length = NULL;
-    params[i+0].is_null = no_null;
-    params[i+0].num = 10;
-    
-    params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
-    params[i+1].buffer_length = sizeof(int8_t);
-    params[i+1].buffer = v.b;
-    params[i+1].length = NULL;
-    params[i+1].is_null = is_null;
-    params[i+1].num = 10;
-
-    params[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-    params[i+2].buffer_length = sizeof(int8_t);
-    params[i+2].buffer = v.v1;
-    params[i+2].length = NULL;
-    params[i+2].is_null = is_null;
-    params[i+2].num = 10;
-
-    params[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    params[i+3].buffer_length = sizeof(int16_t);
-    params[i+3].buffer = v.v2;
-    params[i+3].length = NULL;
-    params[i+3].is_null = is_null;
-    params[i+3].num = 10;
-
-    params[i+4].buffer_type = TSDB_DATA_TYPE_INT;
-    params[i+4].buffer_length = sizeof(int32_t);
-    params[i+4].buffer = v.v4;
-    params[i+4].length = NULL;
-    params[i+4].is_null = is_null;
-    params[i+4].num = 10;
-
-    params[i+5].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    params[i+5].buffer_length = sizeof(int64_t);
-    params[i+5].buffer = v.v8;
-    params[i+5].length = NULL;
-    params[i+5].is_null = is_null;
-    params[i+5].num = 10;
-
-    params[i+6].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    params[i+6].buffer_length = sizeof(float);
-    params[i+6].buffer = v.f4;
-    params[i+6].length = NULL;
-    params[i+6].is_null = is_null;
-    params[i+6].num = 10;
-
-    params[i+7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    params[i+7].buffer_length = sizeof(double);
-    params[i+7].buffer = v.f8;
-    params[i+7].length = NULL;
-    params[i+7].is_null = is_null;
-    params[i+7].num = 10;
-
-    params[i+8].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+8].buffer_length = 40;
-    params[i+8].buffer = v.bin;
-    params[i+8].length = lb;
-    params[i+8].is_null = is_null;
-    params[i+8].num = 10;
-
-    params[i+9].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+9].buffer_length = 40;
-    params[i+9].buffer = v.bin;
-    params[i+9].length = lb;
-    params[i+9].is_null = is_null;
-    params[i+9].num = 10;
-    
-  }
-
-  int64_t tts = 1591060628000;
-  for (int i = 0; i < 10; ++i) {
-    v.ts[i] = tts + i;
-  }
-
-
-  for (int i = 0; i < 1; ++i) {
-    tags[i+0].buffer_type = TSDB_DATA_TYPE_INT;
-    tags[i+0].buffer = v.v4;
-    tags[i+0].is_null = &one_not_null;
-    tags[i+0].length = NULL;
-
-    tags[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
-    tags[i+1].buffer = v.b;
-    tags[i+1].is_null = &one_not_null;
-    tags[i+1].length = NULL;
-
-    tags[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-    tags[i+2].buffer = v.v1;
-    tags[i+2].is_null = &one_not_null;
-    tags[i+2].length = NULL;
-
-    tags[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    tags[i+3].buffer = v.v2;
-    tags[i+3].is_null = &one_not_null;
-    tags[i+3].length = NULL;
-
-    tags[i+4].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    tags[i+4].buffer = v.v8;
-    tags[i+4].is_null = &one_not_null;
-    tags[i+4].length = NULL;
-
-    tags[i+5].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    tags[i+5].buffer = v.f4;
-    tags[i+5].is_null = &one_not_null;
-    tags[i+5].length = NULL;
-
-    tags[i+6].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    tags[i+6].buffer = v.f8;
-    tags[i+6].is_null = &one_not_null;
-    tags[i+6].length = NULL;
+  params[6].buffer = &v.f4;
+  params[6].length = &params[6].buffer_length;
+  params[6].is_null = NULL;
 
-    tags[i+7].buffer_type = TSDB_DATA_TYPE_BINARY;
-    tags[i+7].buffer = v.bin;
-    tags[i+7].is_null = &one_not_null;
-    tags[i+7].length = (uintptr_t *)lb;
+  params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
+  params[7].buffer_length = sizeof(v.f8);
+  params[7].buffer = &v.f8;
+  params[7].length = &params[7].buffer_length;
+  params[7].is_null = NULL;
 
-    tags[i+8].buffer_type = TSDB_DATA_TYPE_NCHAR;
-    tags[i+8].buffer = v.bin;
-    tags[i+8].is_null = &one_not_null;
-    tags[i+8].length = (uintptr_t *)lb;
-  }
+  params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
+  params[8].buffer_length = sizeof(v.bin);
+  params[8].buffer = v.bin;
+  params[8].length = &params[8].buffer_length;
+  params[8].is_null = NULL;
 
+  params[9].buffer_type = TSDB_DATA_TYPE_BINARY;
+  params[9].buffer_length = sizeof(v.bin);
+  params[9].buffer = v.bin;
+  params[9].length = &params[9].buffer_length;
+  params[9].is_null = NULL;
 
-  unsigned long long starttime = taosGetTimestampUs();
+  int is_null = 1;
 
-  char *sql = "insert into ? using stb1 tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
+  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
   if (code != 0){
     printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-    exit(1);
   }
 
-  int id = 0;
-  for (int zz = 0; zz < 1; zz++) {
-    char buf[32];
-    sprintf(buf, "m%d", zz);
-    code = taos_stmt_set_tbname_tags(stmt, buf, tags);
-    if (code != 0){
-      printf("failed to execute taos_stmt_set_tbname_tags. code:0x%x\n", code);
-    }  
+  for (int l = 0; l < 100; l++) {
+    for (int zz = 0; zz < 10; zz++) {
+      char buf[32];
+      sprintf(buf, "m%d", zz);
+      code = taos_stmt_set_tbname(stmt, buf);
+      if (code != 0){
+        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
+      }  
+      v.ts = 1591060628000 + zz * 100 * l;
+      for (int i = 0; i < zz; ++i) {
+        v.ts += 1;
+        for (int j = 1; j < 10; ++j) {
+          params[j].is_null = ((i == j) ? &is_null : 0);
+        }
+        v.b = (int8_t)(i+zz*10) % 2;
+        v.v1 = (int8_t)(i+zz*10);
+        v.v2 = (int16_t)((i+zz*10) * 2);
+        v.v4 = (int32_t)((i+zz*10) * 4);
+        v.v8 = (int64_t)((i+zz*10) * 8);
+        v.f4 = (float)((i+zz*10) * 40);
+        v.f8 = (double)((i+zz*10) * 80);
+        for (int j = 0; j < sizeof(v.bin) - 1; ++j) {
+          v.bin[j] = (char)((i+zz)%10 + '0');
+        }
 
-    taos_stmt_bind_param_batch(stmt, params + id * 10);
-    taos_stmt_add_batch(stmt);
+        taos_stmt_bind_param(stmt, params);
+        taos_stmt_add_batch(stmt);
+      }
+    }
   }
 
+  
   if (taos_stmt_execute(stmt) != 0) {
     printf("failed to execute insert statement.\n");
     exit(1);
   }
 
-  ++id;
-
-  unsigned long long endtime = taosGetTimestampUs();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
-
-  taosMemoryFree(v.ts);  
-  taosMemoryFree(lb);
-  taosMemoryFree(params);
-  taosMemoryFree(is_null);
-  taosMemoryFree(no_null);
-  taosMemoryFree(tags);
 
   return 0;
 }
 
 
 
-
 //1 tables 10 records
-int stmt_funcb_autoctb2(TAOS_STMT *stmt) {
+int stmt_funcb_autoctb1(TAOS_STMT *stmt) {
   struct {
       int64_t *ts;
       int8_t b[10];
@@ -1965,7 +1258,7 @@ int stmt_funcb_autoctb2(TAOS_STMT *stmt) {
 
   unsigned long long starttime = taosGetTimestampUs();
 
-  char *sql = "insert into ? using stb1 tags(1,true,2,3,4,5.0,6.0,'a','b') values(?,?,?,?,?,?,?,?,?,?)";
+  char *sql = "insert into ? using stb1 tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
   if (code != 0){
     printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
@@ -2008,9 +1301,8 @@ int stmt_funcb_autoctb2(TAOS_STMT *stmt) {
 
 
 
-
 //1 tables 10 records
-int stmt_funcb_autoctb3(TAOS_STMT *stmt) {
+int stmt_funcb_autoctb2(TAOS_STMT *stmt) {
   struct {
       int64_t *ts;
       int8_t b[10];
@@ -2103,179 +1395,24 @@ int stmt_funcb_autoctb3(TAOS_STMT *stmt) {
     params[i+7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
     params[i+7].buffer_length = sizeof(double);
     params[i+7].buffer = v.f8;
-    params[i+7].length = NULL;
-    params[i+7].is_null = is_null;
-    params[i+7].num = 10;
-
-    params[i+8].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+8].buffer_length = 40;
-    params[i+8].buffer = v.bin;
-    params[i+8].length = lb;
-    params[i+8].is_null = is_null;
-    params[i+8].num = 10;
-
-    params[i+9].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+9].buffer_length = 40;
-    params[i+9].buffer = v.bin;
-    params[i+9].length = lb;
-    params[i+9].is_null = is_null;
-    params[i+9].num = 10;
-    
-  }
-
-  int64_t tts = 1591060628000;
-  for (int i = 0; i < 10; ++i) {
-    v.ts[i] = tts + i;
-  }
-
-
-  for (int i = 0; i < 1; ++i) {
-    tags[i+0].buffer_type = TSDB_DATA_TYPE_BOOL;
-    tags[i+0].buffer = v.b;
-    tags[i+0].is_null = &one_not_null;
-    tags[i+0].length = NULL;
-
-    tags[i+1].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    tags[i+1].buffer = v.v2;
-    tags[i+1].is_null = &one_not_null;
-    tags[i+1].length = NULL;
-
-    tags[i+2].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    tags[i+2].buffer = v.f4;
-    tags[i+2].is_null = &one_not_null;
-    tags[i+2].length = NULL;
-
-    tags[i+3].buffer_type = TSDB_DATA_TYPE_BINARY;
-    tags[i+3].buffer = v.bin;
-    tags[i+3].is_null = &one_not_null;
-    tags[i+3].length = (uintptr_t *)lb;
-  }
-
-
-  unsigned long long starttime = taosGetTimestampUs();
-
-  char *sql = "insert into ? using stb1 tags(1,?,2,?,4,?,6.0,?,'b') values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-    exit(1);
-  }
-
-  int id = 0;
-  for (int zz = 0; zz < 1; zz++) {
-    char buf[32];
-    sprintf(buf, "m%d", zz);
-    code = taos_stmt_set_tbname_tags(stmt, buf, tags);
-    if (code != 0){
-      printf("failed to execute taos_stmt_set_tbname_tags. code:0x%x\n", code);
-    }  
-
-    taos_stmt_bind_param_batch(stmt, params + id * 10);
-    taos_stmt_add_batch(stmt);
-  }
-
-  if (taos_stmt_execute(stmt) != 0) {
-    printf("failed to execute insert statement.\n");
-    exit(1);
-  }
-
-  ++id;
-
-  unsigned long long endtime = taosGetTimestampUs();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
-
-  taosMemoryFree(v.ts);  
-  taosMemoryFree(lb);
-  taosMemoryFree(params);
-  taosMemoryFree(is_null);
-  taosMemoryFree(no_null);
-  taosMemoryFree(tags);
-
-  return 0;
-}
-
-
-
-
-
-
-
-//1 tables 10 records
-int stmt_funcb_autoctb4(TAOS_STMT *stmt) {
-  struct {
-      int64_t *ts;
-      int8_t b[10];
-      int8_t v1[10];
-      int16_t v2[10];
-      int32_t v4[10];
-      int64_t v8[10];
-      float f4[10];
-      double f8[10];
-      char bin[10][40];
-  } v = {0};
-
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 1 * 10);
-  
-  int *lb = taosMemoryMalloc(10 * sizeof(int));
-
-  TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*5);
-
-//  int one_null = 1;
-  int one_not_null = 0;
-  
-  char* is_null = taosMemoryMalloc(sizeof(char) * 10);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 10);
-
-  for (int i = 0; i < 10; ++i) {
-    lb[i] = 40;
-    no_null[i] = 0;
-    is_null[i] = (i % 10 == 2) ? 1 : 0;
-    v.b[i] = (int8_t)(i % 2);
-    v.v1[i] = (int8_t)((i+1) % 2);
-    v.v2[i] = (int16_t)i;
-    v.v4[i] = (int32_t)(i+1);
-    v.v8[i] = (int64_t)(i+2);
-    v.f4[i] = (float)(i+3);
-    v.f8[i] = (double)(i+4);
-    memset(v.bin[i], '0'+i%10, 40);
-  }
-  
-  for (int i = 0; i < 5; i+=5) {
-    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-    params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[10*i/10];
-    params[i+0].length = NULL;
-    params[i+0].is_null = no_null;
-    params[i+0].num = 10;
-    
-    params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
-    params[i+1].buffer_length = sizeof(int8_t);
-    params[i+1].buffer = v.b;
-    params[i+1].length = NULL;
-    params[i+1].is_null = is_null;
-    params[i+1].num = 10;
-
-    params[i+2].buffer_type = TSDB_DATA_TYPE_INT;
-    params[i+2].buffer_length = sizeof(int32_t);
-    params[i+2].buffer = v.v4;
-    params[i+2].length = NULL;
-    params[i+2].is_null = is_null;
-    params[i+2].num = 10;
-
-    params[i+3].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    params[i+3].buffer_length = sizeof(int64_t);
-    params[i+3].buffer = v.v8;
-    params[i+3].length = NULL;
-    params[i+3].is_null = is_null;
-    params[i+3].num = 10;
+    params[i+7].length = NULL;
+    params[i+7].is_null = is_null;
+    params[i+7].num = 10;
 
-    params[i+4].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    params[i+4].buffer_length = sizeof(double);
-    params[i+4].buffer = v.f8;
-    params[i+4].length = NULL;
-    params[i+4].is_null = is_null;
-    params[i+4].num = 10;
+    params[i+8].buffer_type = TSDB_DATA_TYPE_BINARY;
+    params[i+8].buffer_length = 40;
+    params[i+8].buffer = v.bin;
+    params[i+8].length = lb;
+    params[i+8].is_null = is_null;
+    params[i+8].num = 10;
+
+    params[i+9].buffer_type = TSDB_DATA_TYPE_BINARY;
+    params[i+9].buffer_length = 40;
+    params[i+9].buffer = v.bin;
+    params[i+9].length = lb;
+    params[i+9].is_null = is_null;
+    params[i+9].num = 10;
+    
   }
 
   int64_t tts = 1591060628000;
@@ -2285,31 +1422,56 @@ int stmt_funcb_autoctb4(TAOS_STMT *stmt) {
 
 
   for (int i = 0; i < 1; ++i) {
-    tags[i+0].buffer_type = TSDB_DATA_TYPE_BOOL;
-    tags[i+0].buffer = v.b;
+    tags[i+0].buffer_type = TSDB_DATA_TYPE_INT;
+    tags[i+0].buffer = v.v4;
     tags[i+0].is_null = &one_not_null;
     tags[i+0].length = NULL;
 
-    tags[i+1].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    tags[i+1].buffer = v.v2;
+    tags[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
+    tags[i+1].buffer = v.b;
     tags[i+1].is_null = &one_not_null;
     tags[i+1].length = NULL;
 
-    tags[i+2].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    tags[i+2].buffer = v.f4;
+    tags[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
+    tags[i+2].buffer = v.v1;
     tags[i+2].is_null = &one_not_null;
     tags[i+2].length = NULL;
 
-    tags[i+3].buffer_type = TSDB_DATA_TYPE_BINARY;
-    tags[i+3].buffer = v.bin;
+    tags[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
+    tags[i+3].buffer = v.v2;
     tags[i+3].is_null = &one_not_null;
-    tags[i+3].length = (uintptr_t *)lb;
+    tags[i+3].length = NULL;
+
+    tags[i+4].buffer_type = TSDB_DATA_TYPE_BIGINT;
+    tags[i+4].buffer = v.v8;
+    tags[i+4].is_null = &one_not_null;
+    tags[i+4].length = NULL;
+
+    tags[i+5].buffer_type = TSDB_DATA_TYPE_FLOAT;
+    tags[i+5].buffer = v.f4;
+    tags[i+5].is_null = &one_not_null;
+    tags[i+5].length = NULL;
+
+    tags[i+6].buffer_type = TSDB_DATA_TYPE_DOUBLE;
+    tags[i+6].buffer = v.f8;
+    tags[i+6].is_null = &one_not_null;
+    tags[i+6].length = NULL;
+
+    tags[i+7].buffer_type = TSDB_DATA_TYPE_BINARY;
+    tags[i+7].buffer = v.bin;
+    tags[i+7].is_null = &one_not_null;
+    tags[i+7].length = (uintptr_t *)lb;
+
+    tags[i+8].buffer_type = TSDB_DATA_TYPE_NCHAR;
+    tags[i+8].buffer = v.bin;
+    tags[i+8].is_null = &one_not_null;
+    tags[i+8].length = (uintptr_t *)lb;
   }
 
 
   unsigned long long starttime = taosGetTimestampUs();
 
-  char *sql = "insert into ? using stb1 tags(1,?,2,?,4,?,6.0,?,'b') (ts,b,v4,v8,f8) values(?,?,?,?,?)";
+  char *sql = "insert into ? using stb1 tags(1,true,2,3,4,5.0,6.0,'a','b') values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
   if (code != 0){
     printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
@@ -2325,7 +1487,7 @@ int stmt_funcb_autoctb4(TAOS_STMT *stmt) {
       printf("failed to execute taos_stmt_set_tbname_tags. code:0x%x\n", code);
     }  
 
-    taos_stmt_bind_param_batch(stmt, params + id * 5);
+    taos_stmt_bind_param_batch(stmt, params + id * 10);
     taos_stmt_add_batch(stmt);
   }
 
@@ -2354,7 +1516,7 @@ int stmt_funcb_autoctb4(TAOS_STMT *stmt) {
 
 
 //1 tables 10 records
-int stmt_funcb_autoctb_e1(TAOS_STMT *stmt) {
+int stmt_funcb_autoctb3(TAOS_STMT *stmt) {
   struct {
       int64_t *ts;
       int8_t b[10];
@@ -2498,11 +1660,11 @@ int stmt_funcb_autoctb_e1(TAOS_STMT *stmt) {
 
   unsigned long long starttime = taosGetTimestampUs();
 
-  char *sql = "insert into ? using stb1 (id1,id2,id3,id4,id5,id6,id7,id8,id9) tags(1,?,2,?,4,?,6.0,?,'b') values(?,?,?,?,?,?,?,?,?,?)";
+  char *sql = "insert into ? using stb1 tags(1,?,2,?,4,?,6.0,?,'b') values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
   if (code != 0){
-    printf("failed to execute taos_stmt_prepare. error:%s\n", taos_stmt_errstr(stmt));
-    return -1;
+    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
+    exit(1);
   }
 
   int id = 0;
@@ -2542,8 +1704,10 @@ int stmt_funcb_autoctb_e1(TAOS_STMT *stmt) {
 
 
 
+
+
 //1 tables 10 records
-int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
+int stmt_funcb_autoctb4(TAOS_STMT *stmt) {
   struct {
       int64_t *ts;
       int8_t b[10];
@@ -2561,7 +1725,7 @@ int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
   int *lb = taosMemoryMalloc(10 * sizeof(int));
 
   TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
-  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*5);
 
 //  int one_null = 1;
   int one_not_null = 0;
@@ -2583,7 +1747,7 @@ int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
     memset(v.bin[i], '0'+i%10, 40);
   }
   
-  for (int i = 0; i < 10; i+=10) {
+  for (int i = 0; i < 5; i+=5) {
     params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
     params[i+0].buffer_length = sizeof(int64_t);
     params[i+0].buffer = &v.ts[10*i/10];
@@ -2598,62 +1762,26 @@ int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
     params[i+1].is_null = is_null;
     params[i+1].num = 10;
 
-    params[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-    params[i+2].buffer_length = sizeof(int8_t);
-    params[i+2].buffer = v.v1;
+    params[i+2].buffer_type = TSDB_DATA_TYPE_INT;
+    params[i+2].buffer_length = sizeof(int32_t);
+    params[i+2].buffer = v.v4;
     params[i+2].length = NULL;
     params[i+2].is_null = is_null;
     params[i+2].num = 10;
 
-    params[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    params[i+3].buffer_length = sizeof(int16_t);
-    params[i+3].buffer = v.v2;
+    params[i+3].buffer_type = TSDB_DATA_TYPE_BIGINT;
+    params[i+3].buffer_length = sizeof(int64_t);
+    params[i+3].buffer = v.v8;
     params[i+3].length = NULL;
     params[i+3].is_null = is_null;
     params[i+3].num = 10;
 
-    params[i+4].buffer_type = TSDB_DATA_TYPE_INT;
-    params[i+4].buffer_length = sizeof(int32_t);
-    params[i+4].buffer = v.v4;
+    params[i+4].buffer_type = TSDB_DATA_TYPE_DOUBLE;
+    params[i+4].buffer_length = sizeof(double);
+    params[i+4].buffer = v.f8;
     params[i+4].length = NULL;
     params[i+4].is_null = is_null;
     params[i+4].num = 10;
-
-    params[i+5].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    params[i+5].buffer_length = sizeof(int64_t);
-    params[i+5].buffer = v.v8;
-    params[i+5].length = NULL;
-    params[i+5].is_null = is_null;
-    params[i+5].num = 10;
-
-    params[i+6].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    params[i+6].buffer_length = sizeof(float);
-    params[i+6].buffer = v.f4;
-    params[i+6].length = NULL;
-    params[i+6].is_null = is_null;
-    params[i+6].num = 10;
-
-    params[i+7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    params[i+7].buffer_length = sizeof(double);
-    params[i+7].buffer = v.f8;
-    params[i+7].length = NULL;
-    params[i+7].is_null = is_null;
-    params[i+7].num = 10;
-
-    params[i+8].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+8].buffer_length = 40;
-    params[i+8].buffer = v.bin;
-    params[i+8].length = lb;
-    params[i+8].is_null = is_null;
-    params[i+8].num = 10;
-
-    params[i+9].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+9].buffer_length = 40;
-    params[i+9].buffer = v.bin;
-    params[i+9].length = lb;
-    params[i+9].is_null = is_null;
-    params[i+9].num = 10;
-    
   }
 
   int64_t tts = 1591060628000;
@@ -2663,56 +1791,31 @@ int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
 
 
   for (int i = 0; i < 1; ++i) {
-    tags[i+0].buffer_type = TSDB_DATA_TYPE_INT;
-    tags[i+0].buffer = v.v4;
+    tags[i+0].buffer_type = TSDB_DATA_TYPE_BOOL;
+    tags[i+0].buffer = v.b;
     tags[i+0].is_null = &one_not_null;
     tags[i+0].length = NULL;
 
-    tags[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
-    tags[i+1].buffer = v.b;
+    tags[i+1].buffer_type = TSDB_DATA_TYPE_SMALLINT;
+    tags[i+1].buffer = v.v2;
     tags[i+1].is_null = &one_not_null;
     tags[i+1].length = NULL;
 
-    tags[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-    tags[i+2].buffer = v.v1;
+    tags[i+2].buffer_type = TSDB_DATA_TYPE_FLOAT;
+    tags[i+2].buffer = v.f4;
     tags[i+2].is_null = &one_not_null;
     tags[i+2].length = NULL;
 
-    tags[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    tags[i+3].buffer = v.v2;
+    tags[i+3].buffer_type = TSDB_DATA_TYPE_BINARY;
+    tags[i+3].buffer = v.bin;
     tags[i+3].is_null = &one_not_null;
-    tags[i+3].length = NULL;
-
-    tags[i+4].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    tags[i+4].buffer = v.v8;
-    tags[i+4].is_null = &one_not_null;
-    tags[i+4].length = NULL;
-
-    tags[i+5].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    tags[i+5].buffer = v.f4;
-    tags[i+5].is_null = &one_not_null;
-    tags[i+5].length = NULL;
-
-    tags[i+6].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    tags[i+6].buffer = v.f8;
-    tags[i+6].is_null = &one_not_null;
-    tags[i+6].length = NULL;
-
-    tags[i+7].buffer_type = TSDB_DATA_TYPE_BINARY;
-    tags[i+7].buffer = v.bin;
-    tags[i+7].is_null = &one_not_null;
-    tags[i+7].length = (uintptr_t *)lb;
-
-    tags[i+8].buffer_type = TSDB_DATA_TYPE_NCHAR;
-    tags[i+8].buffer = v.bin;
-    tags[i+8].is_null = &one_not_null;
-    tags[i+8].length = (uintptr_t *)lb;
+    tags[i+3].length = (uintptr_t *)lb;
   }
 
 
   unsigned long long starttime = taosGetTimestampUs();
 
-  char *sql = "insert into ? using stb1 tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
+  char *sql = "insert into ? using stb1 tags(1,?,2,?,4,?,6.0,?,'b') (ts,b,v4,v8,f8) values(?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
   if (code != 0){
     printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
@@ -2723,13 +1826,12 @@ int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
   for (int zz = 0; zz < 1; zz++) {
     char buf[32];
     sprintf(buf, "m%d", zz);
-    code = taos_stmt_set_tbname_tags(stmt, buf, NULL);
+    code = taos_stmt_set_tbname_tags(stmt, buf, tags);
     if (code != 0){
-      printf("failed to execute taos_stmt_set_tbname_tags. code:%s\n", taos_stmt_errstr(stmt));
-      return -1;
+      printf("failed to execute taos_stmt_set_tbname_tags. code:0x%x\n", code);
     }  
 
-    taos_stmt_bind_param_batch(stmt, params + id * 10);
+    taos_stmt_bind_param_batch(stmt, params + id * 5);
     taos_stmt_add_batch(stmt);
   }
 
@@ -2757,10 +1859,8 @@ int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
 
 
 
-
-
 //1 tables 10 records
-int stmt_funcb_autoctb_e3(TAOS_STMT *stmt) {
+int stmt_funcb_autoctb_e1(TAOS_STMT *stmt) {
   struct {
       int64_t *ts;
       int8_t b[10];
@@ -2880,71 +1980,44 @@ int stmt_funcb_autoctb_e3(TAOS_STMT *stmt) {
 
 
   for (int i = 0; i < 1; ++i) {
-    tags[i+0].buffer_type = TSDB_DATA_TYPE_INT;
-    tags[i+0].buffer = v.v4;
+    tags[i+0].buffer_type = TSDB_DATA_TYPE_BOOL;
+    tags[i+0].buffer = v.b;
     tags[i+0].is_null = &one_not_null;
     tags[i+0].length = NULL;
 
-    tags[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
-    tags[i+1].buffer = v.b;
+    tags[i+1].buffer_type = TSDB_DATA_TYPE_SMALLINT;
+    tags[i+1].buffer = v.v2;
     tags[i+1].is_null = &one_not_null;
     tags[i+1].length = NULL;
 
-    tags[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-    tags[i+2].buffer = v.v1;
+    tags[i+2].buffer_type = TSDB_DATA_TYPE_FLOAT;
+    tags[i+2].buffer = v.f4;
     tags[i+2].is_null = &one_not_null;
     tags[i+2].length = NULL;
 
-    tags[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    tags[i+3].buffer = v.v2;
+    tags[i+3].buffer_type = TSDB_DATA_TYPE_BINARY;
+    tags[i+3].buffer = v.bin;
     tags[i+3].is_null = &one_not_null;
-    tags[i+3].length = NULL;
-
-    tags[i+4].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    tags[i+4].buffer = v.v8;
-    tags[i+4].is_null = &one_not_null;
-    tags[i+4].length = NULL;
-
-    tags[i+5].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    tags[i+5].buffer = v.f4;
-    tags[i+5].is_null = &one_not_null;
-    tags[i+5].length = NULL;
-
-    tags[i+6].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    tags[i+6].buffer = v.f8;
-    tags[i+6].is_null = &one_not_null;
-    tags[i+6].length = NULL;
-
-    tags[i+7].buffer_type = TSDB_DATA_TYPE_BINARY;
-    tags[i+7].buffer = v.bin;
-    tags[i+7].is_null = &one_not_null;
-    tags[i+7].length = (uintptr_t *)lb;
-
-    tags[i+8].buffer_type = TSDB_DATA_TYPE_NCHAR;
-    tags[i+8].buffer = v.bin;
-    tags[i+8].is_null = &one_not_null;
-    tags[i+8].length = (uintptr_t *)lb;
+    tags[i+3].length = (uintptr_t *)lb;
   }
 
 
   unsigned long long starttime = taosGetTimestampUs();
 
-  char *sql = "insert into ? using stb1 (id1,id2,id3,id4,id5,id6,id7,id8,id9) tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
+  char *sql = "insert into ? using stb1 (id1,id2,id3,id4,id5,id6,id7,id8,id9) tags(1,?,2,?,4,?,6.0,?,'b') values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
   if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:%s\n", taos_stmt_errstr(stmt));
+    printf("failed to execute taos_stmt_prepare. error:%s\n", taos_stmt_errstr(stmt));
     return -1;
-    //exit(1);
   }
 
   int id = 0;
   for (int zz = 0; zz < 1; zz++) {
     char buf[32];
     sprintf(buf, "m%d", zz);
-    code = taos_stmt_set_tbname_tags(stmt, buf, NULL);
+    code = taos_stmt_set_tbname_tags(stmt, buf, tags);
     if (code != 0){
       printf("failed to execute taos_stmt_set_tbname_tags. code:0x%x\n", code);
-      return -1;
     }  
 
     taos_stmt_bind_param_batch(stmt, params + id * 10);
@@ -2974,8 +2047,9 @@ int stmt_funcb_autoctb_e3(TAOS_STMT *stmt) {
 
 
 
+
 //1 tables 10 records
-int stmt_funcb_autoctb_e4(TAOS_STMT *stmt) {
+int stmt_funcb_autoctb_e2(TAOS_STMT *stmt) {
   struct {
       int64_t *ts;
       int8_t b[10];
@@ -3147,7 +2221,7 @@ int stmt_funcb_autoctb_e4(TAOS_STMT *stmt) {
   char *sql = "insert into ? using stb1 tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
   if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:%s\n", taos_stmt_errstr(stmt));
+    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
     exit(1);
   }
 
@@ -3155,24 +2229,13 @@ int stmt_funcb_autoctb_e4(TAOS_STMT *stmt) {
   for (int zz = 0; zz < 1; zz++) {
     char buf[32];
     sprintf(buf, "m%d", zz);
-    code = taos_stmt_set_tbname_tags(stmt, buf, tags);
+    code = taos_stmt_set_tbname_tags(stmt, buf, NULL);
     if (code != 0){
-      printf("failed to execute taos_stmt_set_tbname_tags. error:%s\n", taos_stmt_errstr(stmt));
-      exit(1);
+      printf("failed to execute taos_stmt_set_tbname_tags. code:%s\n", taos_stmt_errstr(stmt));
+      return -1;
     }  
 
-    code = taos_stmt_bind_param_batch(stmt, params + id * 10);
-    if (code != 0) {
-      printf("failed to execute taos_stmt_bind_param_batch. error:%s\n", taos_stmt_errstr(stmt));
-      exit(1);
-    }
-    
-    code = taos_stmt_bind_param_batch(stmt, params + id * 10);
-    if (code != 0) {
-      printf("failed to execute taos_stmt_bind_param_batch. error:%s\n", taos_stmt_errstr(stmt));
-      return -1;
-    }
-    
+    taos_stmt_bind_param_batch(stmt, params + id * 10);
     taos_stmt_add_batch(stmt);
   }
 
@@ -3201,8 +2264,9 @@ int stmt_funcb_autoctb_e4(TAOS_STMT *stmt) {
 
 
 
+
 //1 tables 10 records
-int stmt_funcb_autoctb_e5(TAOS_STMT *stmt) {
+int stmt_funcb_autoctb_e3(TAOS_STMT *stmt) {
   struct {
       int64_t *ts;
       int8_t b[10];
@@ -3371,35 +2435,25 @@ int stmt_funcb_autoctb_e5(TAOS_STMT *stmt) {
 
   unsigned long long starttime = taosGetTimestampUs();
 
-  char *sql = "insert into ? using stb1 tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(NULL, sql, 0);
+  char *sql = "insert into ? using stb1 (id1,id2,id3,id4,id5,id6,id7,id8,id9) tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
+  int code = taos_stmt_prepare(stmt, sql, 0);
   if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:%s\n", taos_stmt_errstr(NULL));
+    printf("failed to execute taos_stmt_prepare. code:%s\n", taos_stmt_errstr(stmt));
     return -1;
+    //exit(1);
   }
 
   int id = 0;
   for (int zz = 0; zz < 1; zz++) {
     char buf[32];
     sprintf(buf, "m%d", zz);
-    code = taos_stmt_set_tbname_tags(stmt, buf, tags);
+    code = taos_stmt_set_tbname_tags(stmt, buf, NULL);
     if (code != 0){
-      printf("failed to execute taos_stmt_set_tbname_tags. error:%s\n", taos_stmt_errstr(stmt));
-      exit(1);
+      printf("failed to execute taos_stmt_set_tbname_tags. code:0x%x\n", code);
+      return -1;
     }  
 
-    code = taos_stmt_bind_param_batch(stmt, params + id * 10);
-    if (code != 0) {
-      printf("failed to execute taos_stmt_bind_param_batch. error:%s\n", taos_stmt_errstr(stmt));
-      exit(1);
-    }
-    
-    code = taos_stmt_bind_param_batch(stmt, params + id * 10);
-    if (code != 0) {
-      printf("failed to execute taos_stmt_bind_param_batch. error:%s\n", taos_stmt_errstr(stmt));
-      return -1;
-    }
-    
+    taos_stmt_bind_param_batch(stmt, params + id * 10);
     taos_stmt_add_batch(stmt);
   }
 
@@ -3425,29 +2479,35 @@ int stmt_funcb_autoctb_e5(TAOS_STMT *stmt) {
 
 
 
-//300 tables 60 records
-int stmt_funcb1(TAOS_STMT *stmt) {
+
+//1 tables 10 records
+int stmt_funcb_autoctb_e4(TAOS_STMT *stmt) {
   struct {
       int64_t *ts;
-      int8_t b[60];
-      int8_t v1[60];
-      int16_t v2[60];
-      int32_t v4[60];
-      int64_t v8[60];
-      float f4[60];
-      double f8[60];
-      char bin[60][40];
+      int8_t b[10];
+      int8_t v1[10];
+      int16_t v2[10];
+      int32_t v4[10];
+      int64_t v8[10];
+      float f4[10];
+      double f8[10];
+      char bin[10][40];
   } v = {0};
 
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 900000 * 60);
+  v.ts = taosMemoryMalloc(sizeof(int64_t) * 1 * 10);
   
-  int *lb = taosMemoryMalloc(60 * sizeof(int));
+  int *lb = taosMemoryMalloc(10 * sizeof(int));
+
+  TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
+
+//  int one_null = 1;
+  int one_not_null = 0;
   
-  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 900000*10);
-  char* is_null = taosMemoryMalloc(sizeof(char) * 60);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 60);
+  char* is_null = taosMemoryMalloc(sizeof(char) * 10);
+  char* no_null = taosMemoryMalloc(sizeof(char) * 10);
 
-  for (int i = 0; i < 60; ++i) {
+  for (int i = 0; i < 10; ++i) {
     lb[i] = 40;
     no_null[i] = 0;
     is_null[i] = (i % 10 == 2) ? 1 : 0;
@@ -3461,308 +2521,220 @@ int stmt_funcb1(TAOS_STMT *stmt) {
     memset(v.bin[i], '0'+i%10, 40);
   }
   
-  for (int i = 0; i < 9000000; i+=10) {
+  for (int i = 0; i < 10; i+=10) {
     params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
     params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[60*i/10];
+    params[i+0].buffer = &v.ts[10*i/10];
     params[i+0].length = NULL;
     params[i+0].is_null = no_null;
-    params[i+0].num = 60;
+    params[i+0].num = 10;
     
     params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
     params[i+1].buffer_length = sizeof(int8_t);
     params[i+1].buffer = v.b;
     params[i+1].length = NULL;
     params[i+1].is_null = is_null;
-    params[i+1].num = 60;
+    params[i+1].num = 10;
 
     params[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
     params[i+2].buffer_length = sizeof(int8_t);
     params[i+2].buffer = v.v1;
     params[i+2].length = NULL;
     params[i+2].is_null = is_null;
-    params[i+2].num = 60;
+    params[i+2].num = 10;
 
     params[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
     params[i+3].buffer_length = sizeof(int16_t);
     params[i+3].buffer = v.v2;
     params[i+3].length = NULL;
     params[i+3].is_null = is_null;
-    params[i+3].num = 60;
+    params[i+3].num = 10;
 
     params[i+4].buffer_type = TSDB_DATA_TYPE_INT;
     params[i+4].buffer_length = sizeof(int32_t);
     params[i+4].buffer = v.v4;
     params[i+4].length = NULL;
     params[i+4].is_null = is_null;
-    params[i+4].num = 60;
+    params[i+4].num = 10;
 
     params[i+5].buffer_type = TSDB_DATA_TYPE_BIGINT;
     params[i+5].buffer_length = sizeof(int64_t);
     params[i+5].buffer = v.v8;
     params[i+5].length = NULL;
     params[i+5].is_null = is_null;
-    params[i+5].num = 60;
+    params[i+5].num = 10;
 
     params[i+6].buffer_type = TSDB_DATA_TYPE_FLOAT;
     params[i+6].buffer_length = sizeof(float);
     params[i+6].buffer = v.f4;
     params[i+6].length = NULL;
     params[i+6].is_null = is_null;
-    params[i+6].num = 60;
+    params[i+6].num = 10;
 
     params[i+7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
     params[i+7].buffer_length = sizeof(double);
     params[i+7].buffer = v.f8;
     params[i+7].length = NULL;
     params[i+7].is_null = is_null;
-    params[i+7].num = 60;
+    params[i+7].num = 10;
 
     params[i+8].buffer_type = TSDB_DATA_TYPE_BINARY;
     params[i+8].buffer_length = 40;
     params[i+8].buffer = v.bin;
     params[i+8].length = lb;
     params[i+8].is_null = is_null;
-    params[i+8].num = 60;
+    params[i+8].num = 10;
 
     params[i+9].buffer_type = TSDB_DATA_TYPE_BINARY;
     params[i+9].buffer_length = 40;
     params[i+9].buffer = v.bin;
     params[i+9].length = lb;
     params[i+9].is_null = is_null;
-    params[i+9].num = 60;
+    params[i+9].num = 10;
     
   }
 
   int64_t tts = 1591060628000;
-  for (int i = 0; i < 54000000; ++i) {
+  for (int i = 0; i < 10; ++i) {
     v.ts[i] = tts + i;
   }
 
-  unsigned long long starttime = taosGetTimestampUs();
-
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
-  if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
-  }
-
-  int id = 0;
-  for (int l = 0; l < 3000; l++) {
-    for (int zz = 0; zz < 300; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-
-      taos_stmt_bind_param_batch(stmt, params + id * 10);
-      taos_stmt_add_batch(stmt);
-    }
- 
-    if (taos_stmt_execute(stmt) != 0) {
-      printf("failed to execute insert statement.\n");
-      exit(1);
-    }
-
-    ++id;
-  }
-
-  unsigned long long endtime = taosGetTimestampUs();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
-
-  taosMemoryFree(v.ts);  
-  taosMemoryFree(lb);
-  taosMemoryFree(params);
-  taosMemoryFree(is_null);
-  taosMemoryFree(no_null);
-
-  return 0;
-}
-
-
-//1table 18000 reocrds
-int stmt_funcb2(TAOS_STMT *stmt) {
-  struct {
-      int64_t *ts;
-      int8_t b[18000];
-      int8_t v1[18000];
-      int16_t v2[18000];
-      int32_t v4[18000];
-      int64_t v8[18000];
-      float f4[18000];
-      double f8[18000];
-      char bin[18000][40];
-  } v = {0};
-
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 900000 * 60);
-  
-  int *lb = taosMemoryMalloc(18000 * sizeof(int));
-  
-  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 3000*10);
-  char* is_null = taosMemoryMalloc(sizeof(char) * 18000);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 18000);
-
-  for (int i = 0; i < 18000; ++i) {
-    lb[i] = 40;
-    no_null[i] = 0;
-    is_null[i] = (i % 10 == 2) ? 1 : 0;
-    v.b[i] = (int8_t)(i % 2);
-    v.v1[i] = (int8_t)((i+1) % 2);
-    v.v2[i] = (int16_t)i;
-    v.v4[i] = (int32_t)(i+1);
-    v.v8[i] = (int64_t)(i+2);
-    v.f4[i] = (float)(i+3);
-    v.f8[i] = (double)(i+4);
-    memset(v.bin[i], '0'+i%10, 40);
-  }
-  
-  for (int i = 0; i < 30000; i+=10) {
-    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
-    params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[18000*i/10];
-    params[i+0].length = NULL;
-    params[i+0].is_null = no_null;
-    params[i+0].num = 18000;
-    
-    params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
-    params[i+1].buffer_length = sizeof(int8_t);
-    params[i+1].buffer = v.b;
-    params[i+1].length = NULL;
-    params[i+1].is_null = is_null;
-    params[i+1].num = 18000;
 
-    params[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
-    params[i+2].buffer_length = sizeof(int8_t);
-    params[i+2].buffer = v.v1;
-    params[i+2].length = NULL;
-    params[i+2].is_null = is_null;
-    params[i+2].num = 18000;
+  for (int i = 0; i < 1; ++i) {
+    tags[i+0].buffer_type = TSDB_DATA_TYPE_INT;
+    tags[i+0].buffer = v.v4;
+    tags[i+0].is_null = &one_not_null;
+    tags[i+0].length = NULL;
 
-    params[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
-    params[i+3].buffer_length = sizeof(int16_t);
-    params[i+3].buffer = v.v2;
-    params[i+3].length = NULL;
-    params[i+3].is_null = is_null;
-    params[i+3].num = 18000;
+    tags[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
+    tags[i+1].buffer = v.b;
+    tags[i+1].is_null = &one_not_null;
+    tags[i+1].length = NULL;
 
-    params[i+4].buffer_type = TSDB_DATA_TYPE_INT;
-    params[i+4].buffer_length = sizeof(int32_t);
-    params[i+4].buffer = v.v4;
-    params[i+4].length = NULL;
-    params[i+4].is_null = is_null;
-    params[i+4].num = 18000;
+    tags[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
+    tags[i+2].buffer = v.v1;
+    tags[i+2].is_null = &one_not_null;
+    tags[i+2].length = NULL;
 
-    params[i+5].buffer_type = TSDB_DATA_TYPE_BIGINT;
-    params[i+5].buffer_length = sizeof(int64_t);
-    params[i+5].buffer = v.v8;
-    params[i+5].length = NULL;
-    params[i+5].is_null = is_null;
-    params[i+5].num = 18000;
+    tags[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
+    tags[i+3].buffer = v.v2;
+    tags[i+3].is_null = &one_not_null;
+    tags[i+3].length = NULL;
 
-    params[i+6].buffer_type = TSDB_DATA_TYPE_FLOAT;
-    params[i+6].buffer_length = sizeof(float);
-    params[i+6].buffer = v.f4;
-    params[i+6].length = NULL;
-    params[i+6].is_null = is_null;
-    params[i+6].num = 18000;
+    tags[i+4].buffer_type = TSDB_DATA_TYPE_BIGINT;
+    tags[i+4].buffer = v.v8;
+    tags[i+4].is_null = &one_not_null;
+    tags[i+4].length = NULL;
 
-    params[i+7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
-    params[i+7].buffer_length = sizeof(double);
-    params[i+7].buffer = v.f8;
-    params[i+7].length = NULL;
-    params[i+7].is_null = is_null;
-    params[i+7].num = 18000;
+    tags[i+5].buffer_type = TSDB_DATA_TYPE_FLOAT;
+    tags[i+5].buffer = v.f4;
+    tags[i+5].is_null = &one_not_null;
+    tags[i+5].length = NULL;
 
-    params[i+8].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+8].buffer_length = 40;
-    params[i+8].buffer = v.bin;
-    params[i+8].length = lb;
-    params[i+8].is_null = is_null;
-    params[i+8].num = 18000;
+    tags[i+6].buffer_type = TSDB_DATA_TYPE_DOUBLE;
+    tags[i+6].buffer = v.f8;
+    tags[i+6].is_null = &one_not_null;
+    tags[i+6].length = NULL;
 
-    params[i+9].buffer_type = TSDB_DATA_TYPE_BINARY;
-    params[i+9].buffer_length = 40;
-    params[i+9].buffer = v.bin;
-    params[i+9].length = lb;
-    params[i+9].is_null = is_null;
-    params[i+9].num = 18000;
-    
-  }
+    tags[i+7].buffer_type = TSDB_DATA_TYPE_BINARY;
+    tags[i+7].buffer = v.bin;
+    tags[i+7].is_null = &one_not_null;
+    tags[i+7].length = (uintptr_t *)lb;
 
-  int64_t tts = 1591060628000;
-  for (int i = 0; i < 54000000; ++i) {
-    v.ts[i] = tts + i;
+    tags[i+8].buffer_type = TSDB_DATA_TYPE_NCHAR;
+    tags[i+8].buffer = v.bin;
+    tags[i+8].is_null = &one_not_null;
+    tags[i+8].length = (uintptr_t *)lb;
   }
 
+
   unsigned long long starttime = taosGetTimestampUs();
 
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
+  char *sql = "insert into ? using stb1 tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
   int code = taos_stmt_prepare(stmt, sql, 0);
   if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
+    printf("failed to execute taos_stmt_prepare. code:%s\n", taos_stmt_errstr(stmt));
+    exit(1);
   }
 
   int id = 0;
-  for (int l = 0; l < 10; l++) {
-    for (int zz = 0; zz < 300; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
-
-      taos_stmt_bind_param_batch(stmt, params + id * 10);
-      taos_stmt_add_batch(stmt);
-
-      if (taos_stmt_execute(stmt) != 0) {
-        printf("failed to execute insert statement.\n");
-        exit(1);
-      }
-      ++id;
+  for (int zz = 0; zz < 1; zz++) {
+    char buf[32];
+    sprintf(buf, "m%d", zz);
+    code = taos_stmt_set_tbname_tags(stmt, buf, tags);
+    if (code != 0){
+      printf("failed to execute taos_stmt_set_tbname_tags. error:%s\n", taos_stmt_errstr(stmt));
+      exit(1);
+    }  
 
+    code = taos_stmt_bind_param_batch(stmt, params + id * 10);
+    if (code != 0) {
+      printf("failed to execute taos_stmt_bind_param_batch. error:%s\n", taos_stmt_errstr(stmt));
+      exit(1);
     }
- 
+    
+    code = taos_stmt_bind_param_batch(stmt, params + id * 10);
+    if (code != 0) {
+      printf("failed to execute taos_stmt_bind_param_batch. error:%s\n", taos_stmt_errstr(stmt));
+      return -1;
+    }
+    
+    taos_stmt_add_batch(stmt);
+  }
+
+  if (taos_stmt_execute(stmt) != 0) {
+    printf("failed to execute insert statement.\n");
+    exit(1);
   }
 
+  ++id;
+
   unsigned long long endtime = taosGetTimestampUs();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
+  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
 
   taosMemoryFree(v.ts);  
   taosMemoryFree(lb);
   taosMemoryFree(params);
   taosMemoryFree(is_null);
   taosMemoryFree(no_null);
+  taosMemoryFree(tags);
 
   return 0;
 }
 
 
-//disorder
-int stmt_funcb3(TAOS_STMT *stmt) {
+
+
+
+
+//1 tables 10 records
+int stmt_funcb_autoctb_e5(TAOS_STMT *stmt) {
   struct {
       int64_t *ts;
-      int8_t b[60];
-      int8_t v1[60];
-      int16_t v2[60];
-      int32_t v4[60];
-      int64_t v8[60];
-      float f4[60];
-      double f8[60];
-      char bin[60][40];
+      int8_t b[10];
+      int8_t v1[10];
+      int16_t v2[10];
+      int32_t v4[10];
+      int64_t v8[10];
+      float f4[10];
+      double f8[10];
+      char bin[10][40];
   } v = {0};
 
-  v.ts = taosMemoryMalloc(sizeof(int64_t) * 900000 * 60);
+  v.ts = taosMemoryMalloc(sizeof(int64_t) * 1 * 10);
   
-  int *lb = taosMemoryMalloc(60 * sizeof(int));
+  int *lb = taosMemoryMalloc(10 * sizeof(int));
+
+  TAOS_BIND *tags = taosMemoryCalloc(1, sizeof(TAOS_BIND) * 9 * 1);
+  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 1*10);
+
+//  int one_null = 1;
+  int one_not_null = 0;
   
-  TAOS_BIND_v2 *params = taosMemoryCalloc(1, sizeof(TAOS_BIND_v2) * 900000*10);
-  char* is_null = taosMemoryMalloc(sizeof(char) * 60);
-  char* no_null = taosMemoryMalloc(sizeof(char) * 60);
+  char* is_null = taosMemoryMalloc(sizeof(char) * 10);
+  char* no_null = taosMemoryMalloc(sizeof(char) * 10);
 
-  for (int i = 0; i < 60; ++i) {
+  for (int i = 0; i < 10; ++i) {
     lb[i] = 40;
     no_null[i] = 0;
     is_null[i] = (i % 10 == 2) ? 1 : 0;
@@ -3776,135 +2748,187 @@ int stmt_funcb3(TAOS_STMT *stmt) {
     memset(v.bin[i], '0'+i%10, 40);
   }
   
-  for (int i = 0; i < 9000000; i+=10) {
+  for (int i = 0; i < 10; i+=10) {
     params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
     params[i+0].buffer_length = sizeof(int64_t);
-    params[i+0].buffer = &v.ts[60*i/10];
+    params[i+0].buffer = &v.ts[10*i/10];
     params[i+0].length = NULL;
     params[i+0].is_null = no_null;
-    params[i+0].num = 60;
+    params[i+0].num = 10;
     
     params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
     params[i+1].buffer_length = sizeof(int8_t);
     params[i+1].buffer = v.b;
     params[i+1].length = NULL;
     params[i+1].is_null = is_null;
-    params[i+1].num = 60;
+    params[i+1].num = 10;
 
     params[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
     params[i+2].buffer_length = sizeof(int8_t);
     params[i+2].buffer = v.v1;
     params[i+2].length = NULL;
     params[i+2].is_null = is_null;
-    params[i+2].num = 60;
+    params[i+2].num = 10;
 
     params[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
     params[i+3].buffer_length = sizeof(int16_t);
     params[i+3].buffer = v.v2;
     params[i+3].length = NULL;
     params[i+3].is_null = is_null;
-    params[i+3].num = 60;
+    params[i+3].num = 10;
 
     params[i+4].buffer_type = TSDB_DATA_TYPE_INT;
     params[i+4].buffer_length = sizeof(int32_t);
     params[i+4].buffer = v.v4;
     params[i+4].length = NULL;
     params[i+4].is_null = is_null;
-    params[i+4].num = 60;
+    params[i+4].num = 10;
 
     params[i+5].buffer_type = TSDB_DATA_TYPE_BIGINT;
     params[i+5].buffer_length = sizeof(int64_t);
     params[i+5].buffer = v.v8;
     params[i+5].length = NULL;
     params[i+5].is_null = is_null;
-    params[i+5].num = 60;
+    params[i+5].num = 10;
 
     params[i+6].buffer_type = TSDB_DATA_TYPE_FLOAT;
     params[i+6].buffer_length = sizeof(float);
     params[i+6].buffer = v.f4;
     params[i+6].length = NULL;
     params[i+6].is_null = is_null;
-    params[i+6].num = 60;
+    params[i+6].num = 10;
 
     params[i+7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
     params[i+7].buffer_length = sizeof(double);
     params[i+7].buffer = v.f8;
     params[i+7].length = NULL;
     params[i+7].is_null = is_null;
-    params[i+7].num = 60;
+    params[i+7].num = 10;
 
     params[i+8].buffer_type = TSDB_DATA_TYPE_BINARY;
     params[i+8].buffer_length = 40;
     params[i+8].buffer = v.bin;
     params[i+8].length = lb;
     params[i+8].is_null = is_null;
-    params[i+8].num = 60;
+    params[i+8].num = 10;
 
     params[i+9].buffer_type = TSDB_DATA_TYPE_BINARY;
     params[i+9].buffer_length = 40;
     params[i+9].buffer = v.bin;
     params[i+9].length = lb;
     params[i+9].is_null = is_null;
-    params[i+9].num = 60;
+    params[i+9].num = 10;
     
   }
 
   int64_t tts = 1591060628000;
-  int64_t ttt = 0;
-  for (int i = 0; i < 54000000; ++i) {
+  for (int i = 0; i < 10; ++i) {
     v.ts[i] = tts + i;
-    if (i > 0 && i%60 == 0) {
-      ttt = v.ts[i-1];
-      v.ts[i-1] = v.ts[i-60];
-      v.ts[i-60] = ttt;
-    }
   }
 
+
+  for (int i = 0; i < 1; ++i) {
+    tags[i+0].buffer_type = TSDB_DATA_TYPE_INT;
+    tags[i+0].buffer = v.v4;
+    tags[i+0].is_null = &one_not_null;
+    tags[i+0].length = NULL;
+
+    tags[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
+    tags[i+1].buffer = v.b;
+    tags[i+1].is_null = &one_not_null;
+    tags[i+1].length = NULL;
+
+    tags[i+2].buffer_type = TSDB_DATA_TYPE_TINYINT;
+    tags[i+2].buffer = v.v1;
+    tags[i+2].is_null = &one_not_null;
+    tags[i+2].length = NULL;
+
+    tags[i+3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
+    tags[i+3].buffer = v.v2;
+    tags[i+3].is_null = &one_not_null;
+    tags[i+3].length = NULL;
+
+    tags[i+4].buffer_type = TSDB_DATA_TYPE_BIGINT;
+    tags[i+4].buffer = v.v8;
+    tags[i+4].is_null = &one_not_null;
+    tags[i+4].length = NULL;
+
+    tags[i+5].buffer_type = TSDB_DATA_TYPE_FLOAT;
+    tags[i+5].buffer = v.f4;
+    tags[i+5].is_null = &one_not_null;
+    tags[i+5].length = NULL;
+
+    tags[i+6].buffer_type = TSDB_DATA_TYPE_DOUBLE;
+    tags[i+6].buffer = v.f8;
+    tags[i+6].is_null = &one_not_null;
+    tags[i+6].length = NULL;
+
+    tags[i+7].buffer_type = TSDB_DATA_TYPE_BINARY;
+    tags[i+7].buffer = v.bin;
+    tags[i+7].is_null = &one_not_null;
+    tags[i+7].length = (uintptr_t *)lb;
+
+    tags[i+8].buffer_type = TSDB_DATA_TYPE_NCHAR;
+    tags[i+8].buffer = v.bin;
+    tags[i+8].is_null = &one_not_null;
+    tags[i+8].length = (uintptr_t *)lb;
+  }
+
+
   unsigned long long starttime = taosGetTimestampUs();
 
-  char *sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
-  int code = taos_stmt_prepare(stmt, sql, 0);
+  char *sql = "insert into ? using stb1 tags(?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?)";
+  int code = taos_stmt_prepare(NULL, sql, 0);
   if (code != 0){
-    printf("failed to execute taos_stmt_prepare. code:0x%x\n", code);
+    printf("failed to execute taos_stmt_prepare. code:%s\n", taos_stmt_errstr(NULL));
+    return -1;
   }
 
   int id = 0;
-  for (int l = 0; l < 3000; l++) {
-    for (int zz = 0; zz < 300; zz++) {
-      char buf[32];
-      sprintf(buf, "m%d", zz);
-      code = taos_stmt_set_tbname(stmt, buf);
-      if (code != 0){
-        printf("failed to execute taos_stmt_set_tbname. code:0x%x\n", code);
-      }  
+  for (int zz = 0; zz < 1; zz++) {
+    char buf[32];
+    sprintf(buf, "m%d", zz);
+    code = taos_stmt_set_tbname_tags(stmt, buf, tags);
+    if (code != 0){
+      printf("failed to execute taos_stmt_set_tbname_tags. error:%s\n", taos_stmt_errstr(stmt));
+      exit(1);
+    }  
 
-      taos_stmt_bind_param_batch(stmt, params + id * 10);
-      taos_stmt_add_batch(stmt);
-    }
- 
-    if (taos_stmt_execute(stmt) != 0) {
-      printf("failed to execute insert statement.\n");
+    code = taos_stmt_bind_param_batch(stmt, params + id * 10);
+    if (code != 0) {
+      printf("failed to execute taos_stmt_bind_param_batch. error:%s\n", taos_stmt_errstr(stmt));
       exit(1);
     }
+    
+    code = taos_stmt_bind_param_batch(stmt, params + id * 10);
+    if (code != 0) {
+      printf("failed to execute taos_stmt_bind_param_batch. error:%s\n", taos_stmt_errstr(stmt));
+      return -1;
+    }
+    
+    taos_stmt_add_batch(stmt);
+  }
 
-    ++id;
+  if (taos_stmt_execute(stmt) != 0) {
+    printf("failed to execute insert statement.\n");
+    exit(1);
   }
 
+  ++id;
+
   unsigned long long endtime = taosGetTimestampUs();
-  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 3000*300*60, (endtime-starttime)/1000000UL, (endtime-starttime)/(3000*300*60));
+  printf("insert total %d records, used %u seconds, avg:%u useconds\n", 10, (endtime-starttime)/1000000UL, (endtime-starttime)/(10));
 
   taosMemoryFree(v.ts);  
   taosMemoryFree(lb);
   taosMemoryFree(params);
   taosMemoryFree(is_null);
   taosMemoryFree(no_null);
+  taosMemoryFree(tags);
 
   return 0;
 }
 
-
-
-
 //samets
 int stmt_funcb4(TAOS_STMT *stmt) {
   struct {
@@ -4936,7 +3960,6 @@ int stmt_funcb_sc3(TAOS_STMT *stmt) {
 }
 #endif
 
-
 void prepareCheckResultImpl(TAOS     *taos, char *tname, int printr, int expected) {
   char sql[255] = "SELECT * FROM ";
   TAOS_RES *result;
@@ -5323,6 +4346,9 @@ void* runcase(TAOS *taos) {
     if (gCurCase->fullCol) {
       gCurCase->bindColNum = gCurCase->colNum;
     }
+
+    gCurCase->bindNullNum = gTestNull;
+    gCurCase->autoCreate = gTestAutoCreate;
     
     for (int32_t n = 0; n < gCurCase->runTimes; ++n) {
       prepare(taos, gCurCase->colNum, gCurCase->colList, gCurCase->autoCreate);