[TS-1289]<fix>: fixed show create stable error if tag type was json

src/client/src/tscLocal.c

@@ -375,6 +375,8 @@ static int32_t tscGetTableTagValue(SCreateBuilder *builder, char *result) {
         || fields[i].type == TSDB_DATA_TYPE_BINARY 
         || fields[i].type == TSDB_DATA_TYPE_TIMESTAMP) && 0 == ret) {
       snprintf(result + strlen(result), TSDB_MAX_BINARY_LEN - strlen(result), "\"%s\",", buf);
+    } else if (fields[i].type == TSDB_DATA_TYPE_JSON) {
+      snprintf(result + strlen(result), TSDB_MAX_BINARY_LEN - strlen(result), "'%s,", buf);
     } else {
       snprintf(result + strlen(result), TSDB_MAX_BINARY_LEN - strlen(result), "%s,", buf);
     }
@@ -382,9 +384,13 @@ static int32_t tscGetTableTagValue(SCreateBuilder *builder, char *result) {
     free(buf);
 
     if (i == num_fields - 1) {
+      if (fields[i].type == TSDB_DATA_TYPE_JSON) {
+        sprintf(result + strlen(result) - 1, "%s'", ")");
+      } else {
         sprintf(result + strlen(result) - 1, "%s", ")");
       }
     }
+  }
 
   if (0 == strlen(result)) {
    return TSDB_CODE_TSC_INVALID_TABLE_NAME;

src/tsdb/src/tsdbRead.c

@@ -4533,21 +4533,13 @@ void getJsonTagValueAll(void* data, void* dst, int16_t bytes) {
     return;
   }
 
-  char *p = NULL;
-  char* str = malloc(strlen(json) + 3);
-  if (str) {
-    snprintf(str, len + 3, "'%s'", json);
-  }
-
-  p = str ? str : json;
   int32_t length = 0;
-  if(!taosMbsToUcs4(p, strlen(p), varDataVal(tagData), bytes - VARSTR_HEADER_SIZE - CHAR_BYTES, &length)){
+  if(!taosMbsToUcs4(json, strlen(json), varDataVal(tagData), bytes - VARSTR_HEADER_SIZE - CHAR_BYTES, &length)){
     tsdbError("getJsonTagValueAll mbstoucs4 error! length:%d", length);
   }
   varDataSetLen(tagData, length);
   assert(varDataTLen(tagData) <= bytes);
   tfree(json);
-  tfree(str);
 }
 
 char* parseTagDatatoJson(void *p){