add prepare APIs

tests/examples/c/apitest.c

@@ -404,6 +404,471 @@ void verify_prepare(TAOS* taos) {
   taos_stmt_close(stmt);
 }
 
+
+
+
+
+void verify_prepare2(TAOS* taos) {
+  TAOS_RES* result = taos_query(taos, "drop database if exists test;");
+  taos_free_result(result);
+  usleep(100000);
+  result = taos_query(taos, "create database test;");
+
+  int code = taos_errno(result);
+  if (code != 0) {
+    printf("\033[31mfailed to create database, reason:%s\033[0m\n", taos_errstr(result));
+    taos_free_result(result);
+    return;
+  }
+  taos_free_result(result);
+
+  usleep(100000);
+  taos_select_db(taos, "test");
+
+  // create table
+  const char* sql = "create table m1 (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin binary(40), blob nchar(10))";
+  result = taos_query(taos, sql);
+  code = taos_errno(result);
+  if (code != 0) {
+    printf("\033[31mfailed to create table, reason:%s\033[0m\n", taos_errstr(result));
+    taos_free_result(result);
+    return;
+  }
+  taos_free_result(result);
+
+  // insert 10 records
+  struct {
+      int64_t ts[10];
+      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];
+      char blob[10][80];
+  } v = {0};
+
+  int32_t *t8_len = malloc(sizeof(int32_t) * 10);
+  int32_t *t16_len = malloc(sizeof(int32_t) * 10);
+  int32_t *t32_len = malloc(sizeof(int32_t) * 10);
+  int32_t *t64_len = malloc(sizeof(int32_t) * 10);
+  int32_t *float_len = malloc(sizeof(int32_t) * 10);
+  int32_t *double_len = malloc(sizeof(int32_t) * 10);
+  int32_t *bin_len = malloc(sizeof(int32_t) * 10);
+  int32_t *blob_len = malloc(sizeof(int32_t) * 10);
+
+  TAOS_STMT* stmt = taos_stmt_init(taos);
+  TAOS_MULTI_BIND params[10];
+  char is_null[10] = {0};
+  
+  params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
+  params[0].buffer_length = sizeof(v.ts[0]);
+  params[0].buffer = v.ts;
+  params[0].length = t64_len;
+  params[0].is_null = is_null;
+  params[0].num = 10;
+
+  params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
+  params[1].buffer_length = sizeof(v.b[0]);
+  params[1].buffer = v.b;
+  params[1].length = t8_len;
+  params[1].is_null = is_null;
+  params[1].num = 10;
+
+  params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
+  params[2].buffer_length = sizeof(v.v1[0]);
+  params[2].buffer = v.v1;
+  params[2].length = t8_len;
+  params[2].is_null = is_null;
+  params[2].num = 10;
+
+  params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
+  params[3].buffer_length = sizeof(v.v2[0]);
+  params[3].buffer = v.v2;
+  params[3].length = t16_len;
+  params[3].is_null = is_null;
+  params[3].num = 10;
+
+  params[4].buffer_type = TSDB_DATA_TYPE_INT;
+  params[4].buffer_length = sizeof(v.v4[0]);
+  params[4].buffer = v.v4;
+  params[4].length = t32_len;
+  params[4].is_null = is_null;
+  params[4].num = 10;
+
+  params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
+  params[5].buffer_length = sizeof(v.v8[0]);
+  params[5].buffer = v.v8;
+  params[5].length = t64_len;
+  params[5].is_null = is_null;
+  params[5].num = 10;
+
+  params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
+  params[6].buffer_length = sizeof(v.f4[0]);
+  params[6].buffer = v.f4;
+  params[6].length = float_len;
+  params[6].is_null = is_null;
+  params[6].num = 10;
+
+  params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
+  params[7].buffer_length = sizeof(v.f8[0]);
+  params[7].buffer = v.f8;
+  params[7].length = double_len;
+  params[7].is_null = is_null;
+  params[7].num = 10;
+
+  params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
+  params[8].buffer_length = sizeof(v.bin[0]);
+  params[8].buffer = v.bin;
+  params[8].length = bin_len;
+  params[8].is_null = is_null;
+  params[8].num = 10;
+
+  params[9].buffer_type = TSDB_DATA_TYPE_NCHAR;
+  params[9].buffer_length = sizeof(v.blob[0]);
+  params[9].buffer = v.blob;
+  params[9].length = blob_len;
+  params[9].is_null = is_null;
+  params[9].num = 10;
+
+
+  sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?)";
+  code = taos_stmt_prepare(stmt, sql, 0);
+  if (code != 0){
+    printf("\033[31mfailed to execute taos_stmt_prepare. code:0x%x\033[0m\n", code);
+  }
+
+  code = taos_stmt_set_tbname(stmt, "m1");
+  if (code != 0){
+    printf("\033[31mfailed to execute taos_stmt_prepare. code:0x%x\033[0m\n", code);
+  }
+  
+  int64_t ts = 1591060628000;
+  for (int i = 0; i < 10; ++i) {
+    v.ts[i] = ts++;
+    is_null[i] = 0;
+
+    v.b[i] = (int8_t)i % 2;
+    v.v1[i] = (int8_t)i;
+    v.v2[i] = (int16_t)(i * 2);
+    v.v4[i] = (int32_t)(i * 4);
+    v.v8[i] = (int64_t)(i * 8);
+    v.f4[i] = (float)(i * 40);
+    v.f8[i] = (double)(i * 80);
+    for (int j = 0; j < sizeof(v.bin[0]) - 1; ++j) {
+      v.bin[i][j] = (char)(i + '0');
+    }    
+    strcpy(v.blob[i], "一二三四五六七八九十");
+
+    t8_len[i] = sizeof(int8_t);
+    t16_len[i] = sizeof(int16_t);
+    t32_len[i] = sizeof(int32_t);
+    t64_len[i] = sizeof(int64_t);
+    float_len[i] = sizeof(float);
+    double_len[i] = sizeof(double);
+    bin_len[i] = sizeof(v.bin[0]);
+    blob_len[i] = (int32_t)strlen(v.blob[i]);
+  }
+
+  taos_stmt_bind_param_batch(stmt, params);
+  taos_stmt_add_batch(stmt);
+  
+  if (taos_stmt_execute(stmt) != 0) {
+    printf("\033[31mfailed to execute insert statement.\033[0m\n");
+    return;
+  }
+  taos_stmt_close(stmt);
+
+
+
+  // query the records
+  stmt = taos_stmt_init(taos);
+  taos_stmt_prepare(stmt, "SELECT * FROM m1 WHERE v1 > ? AND v2 < ?", 0);
+  TAOS_BIND qparams[2];
+
+  int8_t v1 = 5;
+  int16_t v2 = 15;
+  qparams[0].buffer_type = TSDB_DATA_TYPE_TINYINT;
+  qparams[0].buffer_length = sizeof(v1);
+  qparams[0].buffer = &v1;
+  qparams[0].length = &qparams[0].buffer_length;
+  qparams[0].is_null = NULL;
+
+  qparams[1].buffer_type = TSDB_DATA_TYPE_SMALLINT;
+  qparams[1].buffer_length = sizeof(v2);
+  qparams[1].buffer = &v2;
+  qparams[1].length = &qparams[1].buffer_length;
+  qparams[1].is_null = NULL;
+
+  taos_stmt_bind_param(stmt, qparams);
+  if (taos_stmt_execute(stmt) != 0) {
+    printf("\033[31mfailed to execute select statement.\033[0m\n");
+    return;
+  }
+
+  result = taos_stmt_use_result(stmt);
+
+  TAOS_ROW    row;
+  int         rows = 0;
+  int         num_fields = taos_num_fields(result);
+  TAOS_FIELD *fields = taos_fetch_fields(result);
+  char        temp[256];
+
+  // fetch the records row by row
+  while ((row = taos_fetch_row(result))) {
+    rows++;
+    taos_print_row(temp, row, fields, num_fields);
+    printf("%s\n", temp);
+  }
+
+  taos_free_result(result);
+  taos_stmt_close(stmt);
+}
+
+
+
+void verify_prepare3(TAOS* taos) {
+  TAOS_RES* result = taos_query(taos, "drop database if exists test;");
+  taos_free_result(result);
+  usleep(100000);
+  result = taos_query(taos, "create database test;");
+
+  int code = taos_errno(result);
+  if (code != 0) {
+    printf("\033[31mfailed to create database, reason:%s\033[0m\n", taos_errstr(result));
+    taos_free_result(result);
+    return;
+  }
+  taos_free_result(result);
+
+  usleep(100000);
+  taos_select_db(taos, "test");
+
+  // create table
+  const char* sql = "create stable st1 (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin binary(40), blob nchar(10)) tags (id1 int, id2 binary(40))";
+  result = taos_query(taos, sql);
+  code = taos_errno(result);
+  if (code != 0) {
+    printf("\033[31mfailed to create table, reason:%s\033[0m\n", taos_errstr(result));
+    taos_free_result(result);
+    return;
+  }
+  taos_free_result(result);
+
+  TAOS_BIND tags[2];
+
+  int32_t id1 = 1;
+  char id2[40] = "abcdefghijklmnopqrstuvwxyz0123456789";
+  uintptr_t id2_len = strlen(id2);
+  
+  tags[0].buffer_type = TSDB_DATA_TYPE_INT;
+  tags[0].buffer_length = sizeof(int);
+  tags[0].buffer = &id1;
+  tags[0].length = NULL;
+  tags[0].is_null = NULL;
+
+  tags[1].buffer_type = TSDB_DATA_TYPE_BINARY;
+  tags[1].buffer_length = sizeof(id2);
+  tags[1].buffer = id2;
+  tags[1].length = &id2_len;
+  tags[1].is_null = NULL;
+
+
+  // insert 10 records
+  struct {
+      int64_t ts[10];
+      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];
+      char blob[10][80];
+  } v = {0};
+
+  int32_t *t8_len = malloc(sizeof(int32_t) * 10);
+  int32_t *t16_len = malloc(sizeof(int32_t) * 10);
+  int32_t *t32_len = malloc(sizeof(int32_t) * 10);
+  int32_t *t64_len = malloc(sizeof(int32_t) * 10);
+  int32_t *float_len = malloc(sizeof(int32_t) * 10);
+  int32_t *double_len = malloc(sizeof(int32_t) * 10);
+  int32_t *bin_len = malloc(sizeof(int32_t) * 10);
+  int32_t *blob_len = malloc(sizeof(int32_t) * 10);
+
+  TAOS_STMT* stmt = taos_stmt_init(taos);
+  TAOS_MULTI_BIND params[10];
+  char is_null[10] = {0};
+  
+  params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
+  params[0].buffer_length = sizeof(v.ts[0]);
+  params[0].buffer = v.ts;
+  params[0].length = t64_len;
+  params[0].is_null = is_null;
+  params[0].num = 10;
+
+  params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
+  params[1].buffer_length = sizeof(v.b[0]);
+  params[1].buffer = v.b;
+  params[1].length = t8_len;
+  params[1].is_null = is_null;
+  params[1].num = 10;
+
+  params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
+  params[2].buffer_length = sizeof(v.v1[0]);
+  params[2].buffer = v.v1;
+  params[2].length = t8_len;
+  params[2].is_null = is_null;
+  params[2].num = 10;
+
+  params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
+  params[3].buffer_length = sizeof(v.v2[0]);
+  params[3].buffer = v.v2;
+  params[3].length = t16_len;
+  params[3].is_null = is_null;
+  params[3].num = 10;
+
+  params[4].buffer_type = TSDB_DATA_TYPE_INT;
+  params[4].buffer_length = sizeof(v.v4[0]);
+  params[4].buffer = v.v4;
+  params[4].length = t32_len;
+  params[4].is_null = is_null;
+  params[4].num = 10;
+
+  params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
+  params[5].buffer_length = sizeof(v.v8[0]);
+  params[5].buffer = v.v8;
+  params[5].length = t64_len;
+  params[5].is_null = is_null;
+  params[5].num = 10;
+
+  params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
+  params[6].buffer_length = sizeof(v.f4[0]);
+  params[6].buffer = v.f4;
+  params[6].length = float_len;
+  params[6].is_null = is_null;
+  params[6].num = 10;
+
+  params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
+  params[7].buffer_length = sizeof(v.f8[0]);
+  params[7].buffer = v.f8;
+  params[7].length = double_len;
+  params[7].is_null = is_null;
+  params[7].num = 10;
+
+  params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
+  params[8].buffer_length = sizeof(v.bin[0]);
+  params[8].buffer = v.bin;
+  params[8].length = bin_len;
+  params[8].is_null = is_null;
+  params[8].num = 10;
+
+  params[9].buffer_type = TSDB_DATA_TYPE_NCHAR;
+  params[9].buffer_length = sizeof(v.blob[0]);
+  params[9].buffer = v.blob;
+  params[9].length = blob_len;
+  params[9].is_null = is_null;
+  params[9].num = 10;
+
+
+  sql = "insert into ? using st1 tags(?,?) values(?,?,?,?,?,?,?,?,?,?)";
+  code = taos_stmt_prepare(stmt, sql, 0);
+  if (code != 0){
+    printf("\033[31mfailed to execute taos_stmt_prepare. code:0x%x\033[0m\n", code);
+  }
+
+  code = taos_stmt_set_tbname_tags(stmt, "m1", tags);
+  if (code != 0){
+    printf("\033[31mfailed to execute taos_stmt_prepare. code:0x%x\033[0m\n", code);
+  }
+  
+  int64_t ts = 1591060628000;
+  for (int i = 0; i < 10; ++i) {
+    v.ts[i] = ts++;
+    is_null[i] = 0;
+  
+    v.b[i] = (int8_t)i % 2;
+    v.v1[i] = (int8_t)i;
+    v.v2[i] = (int16_t)(i * 2);
+    v.v4[i] = (int32_t)(i * 4);
+    v.v8[i] = (int64_t)(i * 8);
+    v.f4[i] = (float)(i * 40);
+    v.f8[i] = (double)(i * 80);
+    for (int j = 0; j < sizeof(v.bin[0]) - 1; ++j) {
+      v.bin[i][j] = (char)(i + '0');
+    }    
+    strcpy(v.blob[i], "一二三四五六七八九十");
+
+    t8_len[i] = sizeof(int8_t);
+    t16_len[i] = sizeof(int16_t);
+    t32_len[i] = sizeof(int32_t);
+    t64_len[i] = sizeof(int64_t);
+    float_len[i] = sizeof(float);
+    double_len[i] = sizeof(double);
+    bin_len[i] = sizeof(v.bin[0]);
+    blob_len[i] = (int32_t)strlen(v.blob[i]);
+  }
+
+
+  taos_stmt_bind_param_batch(stmt, params);
+  taos_stmt_add_batch(stmt);
+  
+  if (taos_stmt_execute(stmt) != 0) {
+    printf("\033[31mfailed to execute insert statement.\033[0m\n");
+    return;
+  }
+  taos_stmt_close(stmt);
+
+  // query the records
+  stmt = taos_stmt_init(taos);
+  taos_stmt_prepare(stmt, "SELECT * FROM m1 WHERE v1 > ? AND v2 < ?", 0);
+
+  TAOS_BIND qparams[2];
+
+  int8_t v1 = 5;
+  int16_t v2 = 15;
+  qparams[0].buffer_type = TSDB_DATA_TYPE_TINYINT;
+  qparams[0].buffer_length = sizeof(v1);
+  qparams[0].buffer = &v1;
+  qparams[0].length = &qparams[0].buffer_length;
+  qparams[0].is_null = NULL;
+
+  qparams[1].buffer_type = TSDB_DATA_TYPE_SMALLINT;
+  qparams[1].buffer_length = sizeof(v2);
+  qparams[1].buffer = &v2;
+  qparams[1].length = &qparams[1].buffer_length;
+  qparams[1].is_null = NULL;
+
+  taos_stmt_bind_param(stmt, qparams);
+  if (taos_stmt_execute(stmt) != 0) {
+    printf("\033[31mfailed to execute select statement.\033[0m\n");
+    return;
+  }
+
+  result = taos_stmt_use_result(stmt);
+
+  TAOS_ROW    row;
+  int         rows = 0;
+  int         num_fields = taos_num_fields(result);
+  TAOS_FIELD *fields = taos_fetch_fields(result);
+  char        temp[256];
+
+  // fetch the records row by row
+  while ((row = taos_fetch_row(result))) {
+    rows++;
+    taos_print_row(temp, row, fields, num_fields);
+    printf("%s\n", temp);
+  }
+
+  taos_free_result(result);
+  taos_stmt_close(stmt);
+}
+
+
+
 void retrieve_callback(void *param, TAOS_RES *tres, int numOfRows)
 {
   if (numOfRows > 0) {
@@ -482,7 +947,7 @@ int main(int argc, char *argv[]) {
   printf("server info: %s\n", info);
   info = taos_get_client_info(taos);
   printf("client info: %s\n", info);
-
+#if 0
   printf("************  verify query  *************\n");
   verify_query(taos);
 
@@ -491,14 +956,24 @@ int main(int argc, char *argv[]) {
 
   printf("*********** verify subscribe ************\n");
   verify_subscribe(taos);
+#endif
 
   printf("************ verify prepare *************\n");
   verify_prepare(taos);
 
+
+  printf("************ verify prepare2 *************\n");
+  verify_prepare2(taos);
+
+  printf("************ verify prepare3 *************\n");
+  verify_prepare3(taos);
+
+#if 0
+
   printf("************ verify stream  *************\n");
   verify_stream(taos);
   printf("done\n");
-
+#endif
   taos_close(taos);
   taos_cleanup();
 }