TD-6129<feature> support null true false for json tag

src/client/src/tscUtil.c

@@ -5310,7 +5310,7 @@ int parseJsontoTagData(char* json, SKVRowBuilder* kvRowBuilder, char* errMsg, in
   char nullTypeKey[VARSTR_HEADER_SIZE + CHAR_BYTES] = {0};
   varDataSetLen(nullTypeKey, CHAR_BYTES);
   *(uint8_t*)(varDataVal(nullTypeKey)) = jsonNULL;
-  tdAddColToKVRow(kvRowBuilder, jsonIndex++, TSDB_DATA_TYPE_JSON, nullTypeKey, false);   // add json null type
+  tdAddColToKVRow(kvRowBuilder, jsonIndex++, TSDB_DATA_TYPE_NCHAR, nullTypeKey, false);   // add json null type
   if (strtrim(json) == 0 || strcasecmp(json, "null") == 0){
     tdAddColToKVRow(kvRowBuilder, jsonIndex++, TSDB_DATA_TYPE_JSON, &jsonNULL, false);   // add json null value
     return TSDB_CODE_SUCCESS;

tests/pytest/stable/json_tag.py

@@ -161,7 +161,7 @@ class TDTestCase:
         tdSql.query("select * from db_json_tag_test.jsons1 where jtag->'location' match 'jin'")
         tdSql.checkRows(2)
 
-        tdSql.query("select * from db_json_tag_test.jsons1 where datastr match 'json and jtag->'location' match 'jin'")
+        tdSql.query("select * from db_json_tag_test.jsons1 where datastr match 'json' and jtag->'location' match 'jin'")
         tdSql.checkRows(2)
 
         tdSql.error("select * from db_json_tag_test.jsons1 where jtag->'num' match '5'")