diff --git a/include/common/tname.h b/include/common/tname.h
index ffa4f8f253..ae2dc32335 100644
--- a/include/common/tname.h
+++ b/include/common/tname.h
@@ -17,6 +17,7 @@
 #define _TD_COMMON_NAME_H_
 
 #include "tdef.h"
+#include "tarray.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -62,6 +63,18 @@ int32_t tNameSetAcctId(SName* dst, int32_t acctId);
 
 bool tNameDBNameEqual(SName* left, SName* right);
 
+typedef struct {
+  // input
+  SArray         *tags;         // element is SSmlKV
+  const char     *sTableName;   // super table name
+  uint8_t        sTableNameLen; // the length of super table name
+
+  // output
+  char           *childTableName;   // must have size of TSDB_TABLE_NAME_LEN;
+  uint64_t       uid;               // child table uid, may be useful
+} RandTableName;
+
+void buildChildTableName(RandTableName *rName);
 
 #ifdef __cplusplus
 }
diff --git a/source/client/src/clientSml.c b/source/client/src/clientSml.c
index a7ce1a30a8..927fec35dc 100644
--- a/source/client/src/clientSml.c
+++ b/source/client/src/clientSml.c
@@ -15,6 +15,7 @@
 #include "tcommon.h"
 #include "catalog.h"
 #include "clientInt.h"
+#include "tname.h"
 //=================================================================================================
 
 #define SPACE ' '
@@ -163,19 +164,6 @@ static int32_t smlBuildInvalidDataMsg(SSmlMsgBuf* pBuf, const char *msg1, const
   return TSDB_CODE_SML_INVALID_DATA;
 }
 
-static int smlCompareKv(const void* p1, const void* p2) {
-  SSmlKv* kv1 = *(SSmlKv**)p1;
-  SSmlKv* kv2 = *(SSmlKv**)p2;
-  int32_t kvLen1 = kv1->keyLen;
-  int32_t kvLen2 = kv2->keyLen;
-  int32_t res = strncasecmp(kv1->key, kv2->key, TMIN(kvLen1, kvLen2));
-  if (res != 0) {
-    return res;
-  } else {
-    return kvLen1-kvLen2;
-  }
-}
-
 static void smlBuildChildTableName(SSmlTableInfo *tags) {
   int32_t size = taosArrayGetSize(tags->tags);
   ASSERT(size > 0);
@@ -943,20 +931,6 @@ static bool smlParseValue(SSmlKv *pVal, SSmlMsgBuf *msg) {
   return false;
 }
 
-static bool checkDuplicateKey(char *key, SHashObj *pHash, SSmlHandle* info) {
-  char *val = NULL;
-  val = taosHashGet(pHash, key, strlen(key));
-  if (val) {
-    uError("SML:0x%"PRIx64" Duplicate key detected:%s", info->id, key);
-    return true;
-  }
-
-  uint8_t dummy_val = 0;
-  taosHashPut(pHash, key, strlen(key), &dummy_val, sizeof(uint8_t));
-
-  return false;
-}
-
 static int32_t smlParseString(const char* sql, SSmlLineInfo *elements, SSmlMsgBuf *msg){
   if(!sql) return TSDB_CODE_SML_INVALID_DATA;
   while (*sql != '\0') {           // jump the space at the begining
@@ -1563,8 +1537,10 @@ static int32_t smlParseLine(SSmlHandle* info, const char* sql) {
 
     tinfo->sTableName = elements.measure;
     tinfo->sTableNameLen = elements.measureLen;
-    smlBuildChildTableName(tinfo);
-    //uDebug("SML:0x%"PRIx64" child table name: %s", info->id, tinfo->childTableName);
+    RandTableName rName = {.tags=tinfo->tags, .sTableName=tinfo->sTableName, .sTableNameLen=tinfo->sTableNameLen,
+                            .childTableName=tinfo->childTableName};
+    buildChildTableName(&rName);
+    tinfo->uid = rName.uid;
 
     SSmlSTableMeta** tableMeta = taosHashGet(info->superTables, elements.measure, elements.measureLen);
     if(tableMeta){  // update meta
@@ -1724,17 +1700,7 @@ static int32_t smlInsertData(SSmlHandle* info) {
   return info->pRequest->code;
 }
 
-int32_t numOfSTables;
-int32_t numOfCTables;
-int32_t numOfCreateSTables;
-
-int64_t parseTime;
-int64_t schemaTime;
-int64_t insertBindTime;
-int64_t insertRpcTime;
-int64_t endTime;
-
-static void printStatisticInfo(SSmlHandle *info){
+static void smlPrintStatisticInfo(SSmlHandle *info){
   uError("SML:0x%"PRIx64" smlInsertLines result, code:%d,lineNum:%d,stable num:%d,ctable num:%d,create stable num:%d \
         parse cost:%lld,schema cost:%lld,bind cost:%lld,rpc cost:%lld,total cost:%lld", info->id, info->cost.code,
          info->cost.lineNum, info->cost.numOfSTables, info->cost.numOfCTables, info->cost.numOfCreateSTables,
@@ -1782,7 +1748,7 @@ static int smlInsertLines(SSmlHandle *info, char* lines[], int numLines) {
 
 cleanup:
   info->cost.code = code;
-  printStatisticInfo(info);
+  smlPrintStatisticInfo(info);
   return code;
 }
 
diff --git a/source/common/src/tname.c b/source/common/src/tname.c
index f4755f5b5e..62ba4bfb79 100644
--- a/source/common/src/tname.c
+++ b/source/common/src/tname.c
@@ -15,6 +15,8 @@
 
 #define _DEFAULT_SOURCE
 #include "tname.h"
+#include "tcommon.h"
+#include "tstrbuild.h"
 
 #define VALID_NAME_TYPE(x)  ((x) == TSDB_DB_NAME_T || (x) == TSDB_TABLE_NAME_T)
 
@@ -294,4 +296,43 @@ int32_t tNameFromString(SName* dst, const char* str, uint32_t type) {
   return 0;
 }
 
+static int compareKv(const void* p1, const void* p2) {
+  SSmlKv* kv1 = *(SSmlKv**)p1;
+  SSmlKv* kv2 = *(SSmlKv**)p2;
+  int32_t kvLen1 = kv1->keyLen;
+  int32_t kvLen2 = kv2->keyLen;
+  int32_t res = strncasecmp(kv1->key, kv2->key, TMIN(kvLen1, kvLen2));
+  if (res != 0) {
+    return res;
+  } else {
+    return kvLen1-kvLen2;
+  }
+}
 
+/*
+ * use stable name and tags to grearate child table name
+ */
+void buildChildTableName(RandTableName *rName) {
+  int32_t size = taosArrayGetSize(rName->tags);
+  ASSERT(size > 0);
+  taosArraySort(rName->tags, compareKv);
+
+  SStringBuilder sb = {0};
+  taosStringBuilderAppendStringLen(&sb, rName->sTableName, rName->sTableNameLen);
+  for (int j = 0; j < size; ++j) {
+    SSmlKv *tagKv = taosArrayGetP(rName->tags, j);
+    taosStringBuilderAppendStringLen(&sb, tagKv->key, tagKv->keyLen);
+    taosStringBuilderAppendStringLen(&sb, tagKv->value, tagKv->valueLen);
+  }
+  size_t len = 0;
+  char* keyJoined = taosStringBuilderGetResult(&sb, &len);
+  T_MD5_CTX context;
+  tMD5Init(&context);
+  tMD5Update(&context, (uint8_t *)keyJoined, (uint32_t)len);
+  tMD5Final(&context);
+  uint64_t digest1 = *(uint64_t*)(context.digest);
+  uint64_t digest2 = *(uint64_t*)(context.digest + 8);
+  snprintf(rName->childTableName, TSDB_TABLE_NAME_LEN, "t_%016"PRIx64"%016"PRIx64, digest1, digest2);
+  taosStringBuilderDestroy(&sb);
+  rName->uid = digest1;
+}