TD-6129<feature> move select json->'key' decode logic to client

src/client/inc/tscUtil.h

@@ -378,7 +378,7 @@ char* cloneCurrentDBName(SSqlObj* pSql);
 
 int parseJsontoTagData(char* json, SKVRowBuilder* kvRowBuilder, char* errMsg, int16_t startColId);
 char* parseTagDatatoJson(void *p);
-void findTagValue(STable* data, char* key, int32_t keyLen, char* out, int* len);
+void findTagValue(STable* data, char* key, int32_t keyLen, char** out, int* len);
 void parseTagValue2Dst(char* result, char* dst);
 
 int8_t jsonType2DbType(double data, int jsonType);

src/client/src/tscSQLParser.c

@@ -6127,7 +6127,7 @@ int32_t setAlterTableInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
 
     SUpdateTableTagValMsg* pUpdateMsg = (SUpdateTableTagValMsg*) pCmd->payload;
     pUpdateMsg->head.vgId = htonl(pTableMeta->vgId);
-    pUpdateMsg->tid       = htonl(pTableMeta->id.tid);
+    pUpdateMsg->tid       = htonl(pTableMeta->id.tid)
     pUpdateMsg->uid       = htobe64(pTableMeta->id.uid);
     pUpdateMsg->colId     = htons(pTagsSchema->colId);
     pUpdateMsg->type      = pTagsSchema->type;

src/client/src/tscUtil.c

@@ -5176,13 +5176,13 @@ char* cloneCurrentDBName(SSqlObj* pSql) {
   return p;
 }
 
-void findTagValue(STable* data, char* key, int32_t keyLen, char* out, int* len){
+void findTagValue(STable* data, char* key, int32_t keyLen, char** out, int* len){
   void* result = getJsonTagValue(data, key, keyLen, NULL);
   if (result == NULL){    // json key no result
     return;
   }
 
-  out = result;
+  *out = result;
   char* realData = POINTER_SHIFT(result, CHAR_BYTES);
   if(*(char*)result == TSDB_DATA_TYPE_NCHAR) {
     *len = varDataTLen(realData) + CHAR_BYTES;

src/query/src/qExecutor.c

@@ -7193,7 +7193,7 @@ static SSDataBlock* doTagScan(void* param, bool* newgroup) {
               jsonKeyMd5(pExprInfo[j].base.param[0].pz, pExprInfo[j].base.param[0].nLen, keyMd5);
               char* strStr = NULL;
               int len = 0;
-              findTagValue(item->pTable, keyMd5, TSDB_MAX_JSON_KEY_MD5_LEN, strStr, &len);
+              findTagValue(item->pTable, keyMd5, TSDB_MAX_JSON_KEY_MD5_LEN, &strStr, &len);
               *dst++ = SELECT_ELEMENT_JSON_TAG;   // select tag->element
               doSetTagValueToResultBuf(dst, strStr, type, len);
             }else{