diff --git a/src/client/src/tscParseLineProtocol.c b/src/client/src/tscParseLineProtocol.c
index 2a16f1aad6525a25da652f643dc7b7f91debd432..43509d3533ebfa3143a7bb43c7e4953132e4474b 100644
--- a/src/client/src/tscParseLineProtocol.c
+++ b/src/client/src/tscParseLineProtocol.c
@@ -32,9 +32,6 @@ typedef struct {
   uint8_t type;
   int16_t length;
   char* value;
-
-  //===================================
-  uint32_t fieldSchemaIdx;
 } TAOS_SML_KV;
 
 typedef struct {
@@ -47,9 +44,6 @@ typedef struct {
   // first kv must be timestamp
   TAOS_SML_KV* fields;
   int32_t fieldNum;
-
-  //================================
-  uint32_t schemaIdx;
 } TAOS_SML_DATA_POINT;
 
 typedef enum {
@@ -62,10 +56,23 @@ typedef enum {
 
 typedef struct {
   uint64_t id;
-
+  SHashObj* smlDataToSchema;
 } SSmlLinesInfo;
+
 //=================================================================================================
 
+static uint64_t linesSmlHandleId = 0;
+
+uint64_t genLinesSmlId() {
+  uint64_t id;
+
+  do {
+    id = atomic_add_fetch_64(&linesSmlHandleId, 1);
+  } while (id == 0);
+
+  return id;
+}
+
 int compareSmlColKv(const void* p1, const void* p2) {
   TAOS_SML_KV* kv1 = (TAOS_SML_KV*)p1;
   TAOS_SML_KV* kv2 = (TAOS_SML_KV*)p2;
@@ -168,11 +175,46 @@ static int32_t buildSmlKvSchema(TAOS_SML_KV* smlKv, SHashObj* hash, SArray* arra
     taosHashPut(hash, field.name, tagKeyLen, &fieldIdx, sizeof(fieldIdx));
   }
 
-  smlKv->fieldSchemaIdx = (uint32_t)fieldIdx;
+  uintptr_t valPointer = (uintptr_t)smlKv;
+  taosHashPut(info->smlDataToSchema, &valPointer, sizeof(uintptr_t), &fieldIdx, sizeof(fieldIdx));
 
   return 0;
 }
 
+static int32_t getSmlMd5ChildTableName(TAOS_SML_DATA_POINT* point, char* tableName, int* tableNameLen,
+                                       SSmlLinesInfo* info) {
+  tscDebug("SML:0x%"PRIx64" taos_sml_insert get child table name through md5", info->id);
+  qsort(point->tags, point->tagNum, sizeof(TAOS_SML_KV), compareSmlColKv);
+
+  SStringBuilder sb; memset(&sb, 0, sizeof(sb));
+  char sTableName[TSDB_TABLE_NAME_LEN] = {0};
+  strtolower(sTableName, point->stableName);
+  taosStringBuilderAppendString(&sb, sTableName);
+  for (int j = 0; j < point->tagNum; ++j) {
+    taosStringBuilderAppendChar(&sb, ',');
+    TAOS_SML_KV* tagKv = point->tags + j;
+    char tagName[TSDB_COL_NAME_LEN] = {0};
+    strtolower(tagName, tagKv->key);
+    taosStringBuilderAppendString(&sb, tagName);
+    taosStringBuilderAppendChar(&sb, '=');
+    taosStringBuilderAppend(&sb, tagKv->value, tagKv->length);
+  }
+  size_t len = 0;
+  char* keyJoined = taosStringBuilderGetResult(&sb, &len);
+  MD5_CTX context;
+  MD5Init(&context);
+  MD5Update(&context, (uint8_t *)keyJoined, (uint32_t)len);
+  MD5Final(&context);
+  *tableNameLen = snprintf(tableName, *tableNameLen,
+                           "t_%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", context.digest[0],
+                           context.digest[1], context.digest[2], context.digest[3], context.digest[4], context.digest[5], context.digest[6],
+                           context.digest[7], context.digest[8], context.digest[9], context.digest[10], context.digest[11],
+                           context.digest[12], context.digest[13], context.digest[14], context.digest[15]);
+  taosStringBuilderDestroy(&sb);
+  tscDebug("SML:0x%"PRIx64" child table name: %s", info->id, tableName);
+  return 0;
+}
+
 static int32_t buildDataPointSchemas(TAOS_SML_DATA_POINT* points, int numPoint, SArray* stableSchemas, SSmlLinesInfo* info) {
   int32_t code = 0;
   SHashObj* sname2shema = taosHashInit(32,
@@ -203,6 +245,15 @@ static int32_t buildDataPointSchemas(TAOS_SML_DATA_POINT* points, int numPoint,
 
     for (int j = 0; j < point->tagNum; ++j) {
       TAOS_SML_KV* tagKv = point->tags + j;
+      if (!point->childTableName) {
+        char childTableName[TSDB_TABLE_NAME_LEN];
+        int32_t tableNameLen = TSDB_TABLE_NAME_LEN;
+        getSmlMd5ChildTableName(point, childTableName, &tableNameLen, info);
+        point->childTableName = calloc(1, tableNameLen+1);
+        strncpy(point->childTableName, childTableName, tableNameLen);
+        point->childTableName[tableNameLen] = '\0';
+      }
+
       code = buildSmlKvSchema(tagKv, pStableSchema->tagHash, pStableSchema->tags, info);
       if (code != 0) {
         tscError("SML:0x%"PRIx64" build data point schema failed. point no.: %d, tag key: %s", info->id, i, tagKv->key);
@@ -219,7 +270,8 @@ static int32_t buildDataPointSchemas(TAOS_SML_DATA_POINT* points, int numPoint,
       }
     }
 
-    point->schemaIdx = (uint32_t)stableIdx;
+    uintptr_t valPointer = (uintptr_t)point;
+    taosHashPut(info->smlDataToSchema, &valPointer, sizeof(uintptr_t), &stableIdx, sizeof(stableIdx));
   }
 
   size_t numStables = taosArrayGetSize(stableSchemas);
@@ -567,41 +619,6 @@ static int32_t modifyDBSchemas(TAOS* taos, SArray* stableSchemas, SSmlLinesInfo*
   return 0;
 }
 
-static int32_t getSmlMd5ChildTableName(TAOS_SML_DATA_POINT* point, char* tableName, int* tableNameLen,
-                                       SSmlLinesInfo* info) {
-  tscDebug("SML:0x%"PRIx64" taos_sml_insert get child table name through md5", info->id);
-  qsort(point->tags, point->tagNum, sizeof(TAOS_SML_KV), compareSmlColKv);
-
-  SStringBuilder sb; memset(&sb, 0, sizeof(sb));
-  char sTableName[TSDB_TABLE_NAME_LEN] = {0};
-  strtolower(sTableName, point->stableName);
-  taosStringBuilderAppendString(&sb, sTableName);
-  for (int j = 0; j < point->tagNum; ++j) {
-    taosStringBuilderAppendChar(&sb, ',');
-    TAOS_SML_KV* tagKv = point->tags + j;
-    char tagName[TSDB_COL_NAME_LEN] = {0};
-    strtolower(tagName, tagKv->key);
-    taosStringBuilderAppendString(&sb, tagName);
-    taosStringBuilderAppendChar(&sb, '=');
-    taosStringBuilderAppend(&sb, tagKv->value, tagKv->length);
-  }
-  size_t len = 0;
-  char* keyJoined = taosStringBuilderGetResult(&sb, &len);
-  MD5_CTX context;
-  MD5Init(&context);
-  MD5Update(&context, (uint8_t *)keyJoined, (uint32_t)len);
-  MD5Final(&context);
-  *tableNameLen = snprintf(tableName, *tableNameLen,
-                           "t_%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", context.digest[0],
-                           context.digest[1], context.digest[2], context.digest[3], context.digest[4], context.digest[5], context.digest[6],
-                           context.digest[7], context.digest[8], context.digest[9], context.digest[10], context.digest[11],
-                           context.digest[12], context.digest[13], context.digest[14], context.digest[15]);
-  taosStringBuilderDestroy(&sb);
-  tscDebug("SML:0x%"PRIx64" child table name: %s", info->id, tableName);
-  return 0;
-}
-
-
 static int32_t changeChildTableTagValue(TAOS* taos, const char* cTableName, const char* tagName, TAOS_BIND* bind, SSmlLinesInfo* info) {
   char sql[512];
   sprintf(sql, "alter table %s set tag %s=?", cTableName, tagName);
@@ -611,25 +628,25 @@ static int32_t changeChildTableTagValue(TAOS* taos, const char* cTableName, cons
   code = taos_stmt_prepare(stmt, sql, (unsigned long)strlen(sql));
 
   if (code != 0) {
-    tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+    tscError("SML:0x%"PRIx64" taos_stmt_prepare return %d:%s", info->id, code, tstrerror(code));
     return code;
   }
 
   code = taos_stmt_bind_param(stmt, bind);
   if (code != 0) {
-    tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+    tscError("SML:0x%"PRIx64" taos_stmt_bind_param return %d:%s", info->id, code, tstrerror(code));
     return code;
   }
 
   code = taos_stmt_execute(stmt);
   if (code != 0) {
-    tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+    tscError("SML:0x%"PRIx64" taos_stmt_execute return %d:%s", info->id, code, tstrerror(code));
     return code;
   }
 
   code = taos_stmt_close(stmt);
   if (code != 0) {
-    tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+    tscError("SML:0x%"PRIx64" taos_stmt_close return %d:%s", info->id, code, tstrerror(code));
     return code;
   }
   return code;
@@ -674,27 +691,27 @@ static int32_t creatChildTableIfNotExists(TAOS* taos, const char* cTableName, co
 
   if (code != 0) {
     tfree(stmt);
-    tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+    tscError("SML:0x%"PRIx64" taos_stmt_prepare returns %d:%s", info->id, code, tstrerror(code));
     return code;
   }
 
   code = taos_stmt_bind_param(stmt, TARRAY_GET_START(tagsBind));
   if (code != 0) {
     tfree(stmt);
-    tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+    tscError("SML:0x%"PRIx64" taos_stmt_bind_param returns %d:%s", info->id, code, tstrerror(code));
     return code;
   }
 
   code = taos_stmt_execute(stmt);
   if (code != 0) {
     tfree(stmt);
-    tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+    tscError("SML:0x%"PRIx64" taos_stmt_execute returns %d:%s", info->id, code, tstrerror(code));
     return code;
   }
 
   code = taos_stmt_close(stmt);
   if (code != 0) {
-    tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+    tscError("SML:0x%"PRIx64" taos_stmt_close return %d:%s", info->id, code, tstrerror(code));
     return code;
   }
   return code;
@@ -738,7 +755,7 @@ static int32_t insertChildTableBatch(TAOS* taos,  char* cTableName, SArray* cols
 
   if (code != 0) {
     tfree(stmt);
-    tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+    tscError("SML:0x%"PRIx64" taos_stmt_prepare return %d:%s", info->id, code, tstrerror(code));
     return code;
   }
 
@@ -746,7 +763,7 @@ static int32_t insertChildTableBatch(TAOS* taos,  char* cTableName, SArray* cols
     code = taos_stmt_set_tbname(stmt, cTableName);
     if (code != 0) {
       tfree(stmt);
-      tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+      tscError("SML:0x%"PRIx64" taos_stmt_set_tbname return %d:%s", info->id, code, tstrerror(code));
       return code;
     }
 
@@ -756,25 +773,25 @@ static int32_t insertChildTableBatch(TAOS* taos,  char* cTableName, SArray* cols
       code = taos_stmt_bind_param(stmt, colsBinds);
       if (code != 0) {
         tfree(stmt);
-        tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+        tscError("SML:0x%"PRIx64" taos_stmt_bind_param return %d:%s", info->id, code, tstrerror(code));
         return code;
       }
       code = taos_stmt_add_batch(stmt);
       if (code != 0) {
         tfree(stmt);
-        tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+        tscError("SML:0x%"PRIx64" taos_stmt_add_batch return %d:%s", info->id, code, tstrerror(code));
         return code;
       }
     }
 
     code = taos_stmt_execute(stmt);
     if (code != 0) {
-      tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+      tscError("SML:0x%"PRIx64" taos_stmt_execute return %d:%s", info->id, code, tstrerror(code));
     }
   } while (code == TSDB_CODE_TDB_TABLE_RECONFIGURE && try++ < TSDB_MAX_REPLICA);
 
   if (code != 0) {
-    tscError("SML:0x%"PRIx64" %s", info->id, taos_stmt_errstr(stmt));
+    tscError("SML:0x%"PRIx64" %d:%s", info->id, code, tstrerror(code));
     taos_stmt_close(stmt);
   } else {
     taos_stmt_close(stmt);
@@ -787,16 +804,10 @@ static int32_t arrangePointsByChildTableName(TAOS_SML_DATA_POINT* points, int nu
                                              SHashObj* cname2points, SArray* stableSchemas, SSmlLinesInfo* info) {
   for (int32_t i = 0; i < numPoints; ++i) {
     TAOS_SML_DATA_POINT * point = points + i;
-    if (!point->childTableName) {
-      char childTableName[TSDB_TABLE_NAME_LEN];
-      int32_t tableNameLen = TSDB_TABLE_NAME_LEN;
-      getSmlMd5ChildTableName(point, childTableName, &tableNameLen, info);
-      point->childTableName = calloc(1, tableNameLen+1);
-      strncpy(point->childTableName, childTableName, tableNameLen);
-      point->childTableName[tableNameLen] = '\0';
-    }
-
-    SSmlSTableSchema* stableSchema = taosArrayGet(stableSchemas, point->schemaIdx);
+    uintptr_t valPointer = (uintptr_t)point;
+    size_t* pSchemaIndex = taosHashGet(info->smlDataToSchema, &valPointer, sizeof(uintptr_t));
+    assert(pSchemaIndex != NULL);
+    SSmlSTableSchema* stableSchema = taosArrayGet(stableSchemas, *pSchemaIndex);
 
     for (int j = 0; j < point->tagNum; ++j) {
       TAOS_SML_KV* kv =  point->tags + j;
@@ -840,7 +851,10 @@ static int32_t applyChildTableTags(TAOS* taos, char* cTableName, char* sTableNam
     TAOS_SML_DATA_POINT * pDataPoint = taosArrayGetP(cTablePoints, i);
     for (int j = 0; j < pDataPoint->tagNum; ++j) {
       TAOS_SML_KV* kv = pDataPoint->tags + j;
-      tagKVs[kv->fieldSchemaIdx] = kv;
+      uintptr_t valPointer = (uintptr_t)kv;
+      size_t* pFieldSchemaIdx = taosHashGet(info->smlDataToSchema, &valPointer, sizeof(uintptr_t));
+      assert(pFieldSchemaIdx != NULL);
+      tagKVs[*pFieldSchemaIdx] = kv;
     }
   }
 
@@ -863,7 +877,10 @@ static int32_t applyChildTableTags(TAOS* taos, char* cTableName, char* sTableNam
   for (int j = 0; j < numTags; ++j) {
     if (tagKVs[j] == NULL) continue;
     TAOS_SML_KV* kv =  tagKVs[j];
-    TAOS_BIND* bind = taosArrayGet(tagBinds, kv->fieldSchemaIdx);
+    uintptr_t valPointer = (uintptr_t)kv;
+    size_t* pFieldSchemaIdx = taosHashGet(info->smlDataToSchema, &valPointer, sizeof(uintptr_t));
+    assert(pFieldSchemaIdx != NULL);
+    TAOS_BIND* bind = taosArrayGet(tagBinds, *pFieldSchemaIdx);
     bind->buffer_type = kv->type;
     bind->length = malloc(sizeof(uintptr_t*));
     *bind->length = kv->length;
@@ -912,7 +929,10 @@ static int32_t applyChildTableTags(TAOS* taos, char* cTableName, char* sTableNam
       assert(tagKV->value);
 
       if (val == NULL || length != tagKV->length || memcmp(tagKV->value, val, length) != 0) {
-        TAOS_BIND* bind = taosArrayGet(tagBinds, tagKV->fieldSchemaIdx);
+        uintptr_t valPointer = (uintptr_t)tagKV;
+        size_t* pFieldSchemaIdx = taosHashGet(info->smlDataToSchema, &valPointer, sizeof(uintptr_t));
+        assert(pFieldSchemaIdx != NULL);
+        TAOS_BIND* bind = taosArrayGet(tagBinds, *pFieldSchemaIdx);
         code = changeChildTableTagValue(taos, cTableName, tagKV->key, bind, info);
         if (code != 0) {
           tscError("SML:0x%"PRIx64" change child table tag failed. table name %s, tag %s", info->id, cTableName, tagKV->key);
@@ -963,7 +983,10 @@ static int32_t applyChildTableFields(TAOS* taos, SSmlSTableSchema* sTableSchema,
     }
     for (int j = 0; j < point->fieldNum; ++j) {
       TAOS_SML_KV* kv = point->fields + j;
-      TAOS_BIND* bind = colBinds + kv->fieldSchemaIdx;
+      uintptr_t valPointer = (uintptr_t)kv;
+      size_t* pFieldSchemaIdx = taosHashGet(info->smlDataToSchema, &valPointer, sizeof(uintptr_t));
+      assert(pFieldSchemaIdx != NULL);
+      TAOS_BIND* bind = colBinds + *pFieldSchemaIdx;
       bind->buffer_type = kv->type;
       bind->length = malloc(sizeof(uintptr_t*));
       *bind->length = kv->length;
@@ -1000,9 +1023,11 @@ static int32_t applyDataPoints(TAOS* taos, TAOS_SML_DATA_POINT* points, int32_t
   while (pCTablePoints) {
     SArray* cTablePoints = *pCTablePoints;
 
-
     TAOS_SML_DATA_POINT* point = taosArrayGetP(cTablePoints, 0);
-    SSmlSTableSchema*    sTableSchema = taosArrayGet(stableSchemas, point->schemaIdx);
+    uintptr_t valPointer = (uintptr_t)point;
+    size_t* pSchemaIndex = taosHashGet(info->smlDataToSchema, &valPointer, sizeof(uintptr_t));
+    assert(pSchemaIndex != NULL);
+    SSmlSTableSchema*    sTableSchema = taosArrayGet(stableSchemas, *pSchemaIndex);
 
     tscDebug("SML:0x%"PRIx64" apply child table tags. child table: %s", info->id, point->childTableName);
     code = applyChildTableTags(taos, point->childTableName, point->stableName, sTableSchema, cTablePoints, info);
@@ -1034,10 +1059,11 @@ cleanup:
   return code;
 }
 
-int taos_sml_insert(TAOS* taos, TAOS_SML_DATA_POINT* points, int numPoint, SSmlLinesInfo* info) {
+int tscSmlInsert(TAOS* taos, TAOS_SML_DATA_POINT* points, int numPoint, SSmlLinesInfo* info) {
   tscDebug("SML:0x%"PRIx64" taos_sml_insert. number of points: %d", info->id, numPoint);
 
   int32_t code = TSDB_CODE_SUCCESS;
+  info->smlDataToSchema = taosHashInit(32, taosGetDefaultHashFunction(TSDB_DATA_TYPE_UBIGINT), true, false);
 
   tscDebug("SML:0x%"PRIx64" build data point schemas", info->id);
   SArray* stableSchemas = taosArrayInit(32, sizeof(SSmlSTableSchema)); // SArray<STableColumnsSchema>
@@ -1067,6 +1093,15 @@ clean_up:
     taosArrayDestroy(schema->tags);
   }
   taosArrayDestroy(stableSchemas);
+  taosHashCleanup(info->smlDataToSchema);
+  return code;
+}
+
+int taos_sml_insert(TAOS* taos, TAOS_SML_DATA_POINT* points, int numPoint) {
+  SSmlLinesInfo* info = calloc(1, sizeof(SSmlLinesInfo));
+  info->id = genLinesSmlId();
+  int code = tscSmlInsert(taos, points, numPoint, info);
+  free(info);
   return code;
 }
 
@@ -2076,18 +2111,6 @@ int32_t tscParseLine(const char* sql, TAOS_SML_DATA_POINT* smlData, SSmlLinesInf
 
 //=========================================================================
 
-static uint64_t linesSmlHandleId = 0;
-
-uint64_t genLinesSmlId() {
-  uint64_t id;
-
-  do {
-    id = atomic_add_fetch_64(&linesSmlHandleId, 1);
-  } while (id == 0);
-
-  return id;
-}
-
 void destroySmlDataPoint(TAOS_SML_DATA_POINT* point) {
   for (int i=0; i<point->tagNum; ++i) {
     free((point->tags+i)->key);
@@ -2157,7 +2180,7 @@ int taos_insert_lines(TAOS* taos, char* lines[], int numLines) {
   }
 
   TAOS_SML_DATA_POINT* points = TARRAY_GET_START(lpPoints);
-  code = taos_sml_insert(taos, points, (int)numPoints, info);
+  code = tscSmlInsert(taos, points, (int)numPoints, info);
   if (code != 0) {
     tscError("SML:0x%"PRIx64" taos_sml_insert error: %s", info->id, tstrerror((code)));
   }