modify json ouput block length

src/client/src/tscSubquery.c

@@ -3709,6 +3709,10 @@ TAOS_ROW doSetResultRowData(SSqlObj *pSql) {
     int32_t type  = pInfo->field.type;
     int32_t bytes = pInfo->field.bytes;
 
+    if (type == TSDB_DATA_TYPE_JSON){
+      bytes -= CHAR_BYTES;   // remove json inter type
+    }
+
     if (pQueryInfo->isStddev && type == TSDB_DATA_TYPE_JSON){  // for json tag compare in the second round of stddev
       pRes->tsrow[j] = pRes->urow[i];
     }else if (!IS_VAR_DATA_TYPE(type) && type != TSDB_DATA_TYPE_JSON) {

src/client/src/tscUtil.c

@@ -774,7 +774,7 @@ static void setResRawPtrImpl(SSqlRes* pRes, SInternalField* pInfo, int32_t i, bo
 
         char* p = pRes->urow[i];
         for (int32_t k = 0; k < pRes->numOfRows; ++k) {
-          char* dst = pRes->buffer[i] + k * pInfo->field.bytes;
+          char* dst = pRes->buffer[i] + k * (pInfo->field.bytes - CHAR_BYTES); // jump json inter type, so minus CHAR_BYTES
           char type = *p;
           char* realData = p + CHAR_BYTES;
           if (type == TSDB_DATA_TYPE_JSON && isNull(realData, TSDB_DATA_TYPE_JSON)) {