diff --git a/include/common/tcommon.h b/include/common/tcommon.h
index 0c4e534734..3c1189da6e 100644
--- a/include/common/tcommon.h
+++ b/include/common/tcommon.h
@@ -200,18 +200,17 @@ typedef struct SExprInfo {
 } SExprInfo;
 
 typedef struct {
-  const char* key;
-  int32_t keyLen;
-  uint8_t type;
-  int16_t length;
+  const char*   key;
+  int32_t       keyLen;
+  uint8_t       type;
   union{
     const char* value;
-    int64_t  i;
-    uint64_t u;
-    double   d;
-    float    f;
+    int64_t     i;
+    uint64_t    u;
+    double      d;
+    float       f;
   };
-  int32_t valueLen;
+  int32_t       length;
 } SSmlKv;
 
 #define QUERY_ASC_FORWARD_STEP  1
diff --git a/source/common/src/tname.c b/source/common/src/tname.c
index f67130885c..fa9b6e1e63 100644
--- a/source/common/src/tname.c
+++ b/source/common/src/tname.c
@@ -317,7 +317,11 @@ void buildChildTableName(RandTableName* rName) {
   for (int j = 0; j < size; ++j) {
     SSmlKv* tagKv = taosArrayGetP(rName->tags, j);
     taosStringBuilderAppendStringLen(&sb, tagKv->key, tagKv->keyLen);
-    taosStringBuilderAppendStringLen(&sb, tagKv->value, tagKv->length);
+    if(IS_VAR_DATA_TYPE(tagKv->type)){
+      taosStringBuilderAppendStringLen(&sb, tagKv->value, tagKv->length);
+    }else{
+      taosStringBuilderAppendStringLen(&sb, (char*)(&(tagKv->value)), tagKv->length);
+    }
   }
   size_t    len = 0;
   char*     keyJoined = taosStringBuilderGetResult(&sb, &len);