fix the output format of json string; add ""

src/client/src/tscUtil.c

@@ -763,19 +763,27 @@ static void setResRawPtrImpl(SSqlRes* pRes, SInternalField* pInfo, int32_t i, bo
         char* dst = pRes->buffer[i] + k * pInfo->field.bytes;
         char type = *p;
         char* realData = p + CHAR_BYTES;
-        if (type == TSDB_DATA_TYPE_NCHAR && isNull(realData, TSDB_DATA_TYPE_NCHAR)) {
+        if (type == TSDB_DATA_TYPE_JSON && isNull(realData, TSDB_DATA_TYPE_JSON)) {
           memcpy(dst, realData, varDataTLen(realData));
         } else if (type == TSDB_DATA_TYPE_BINARY) {
           assert(*(uint32_t*)varDataVal(realData) == TSDB_DATA_JSON_null);   // json null value
           assert(varDataLen(realData) == INT_BYTES);
           sprintf(varDataVal(dst), "%s", "null");
           varDataSetLen(dst, strlen(varDataVal(dst)));
-        }else if (type == TSDB_DATA_TYPE_NCHAR) {
+        }else if (type == TSDB_DATA_TYPE_JSON) {
           int32_t length = taosUcs4ToMbs(varDataVal(realData), varDataLen(realData), varDataVal(dst));
           varDataSetLen(dst, length);
           if (length == 0) {
             tscError("charset:%s to %s. val:%s convert failed.", DEFAULT_UNICODE_ENCODEC, tsCharset, (char*)p);
           }
+        }else if (type == TSDB_DATA_TYPE_NCHAR) {   // value -> "value"
+          *(char*)varDataVal(dst) = '\"';
+          int32_t length = taosUcs4ToMbs(varDataVal(realData), varDataLen(realData), POINTER_SHIFT(varDataVal(dst), CHAR_BYTES));
+          *(char*)(POINTER_SHIFT(varDataVal(dst), length + CHAR_BYTES)) = '\"';
+          varDataSetLen(dst, length + CHAR_BYTES*2);
+          if (length == 0) {
+            tscError("charset:%s to %s. val:%s convert failed.", DEFAULT_UNICODE_ENCODEC, tsCharset, (char*)p);
+          }
         }else if (type == TSDB_DATA_TYPE_DOUBLE) {
           double jsonVd = *(double*)(realData);
           sprintf(varDataVal(dst), "%.9lf", jsonVd);

tests/pytest/stable/json_tag.py

@@ -69,7 +69,7 @@ class TDTestCase:
 
         # test select condition
         tdSql.query("select jtag->'location' from db_json_tag_test.jsons1_2")
-        tdSql.checkData(0, 0, "beijing")
+        tdSql.checkData(0, 0, "\"beijing\"")
 
         tdSql.query("select jtag->'location' from db_json_tag_test.jsons1")
         tdSql.checkRows(4)
@@ -105,7 +105,7 @@ class TDTestCase:
         tdSql.checkRows(0)
 
         tdSql.query("select jtag->'sex' from db_json_tag_test.jsons1 where jtag?'sex' or jtag?'num'")
-        tdSql.checkData(0, 0, "femail")
+        tdSql.checkData(0, 0, "\"femail\"")
         tdSql.checkRows(3)
 
         tdSql.query("select *,tbname from db_json_tag_test.jsons1 where jtag->'location'='beijing'")
@@ -265,13 +265,13 @@ class TDTestCase:
         tdSql.execute("insert into db_json_tag_test.jsons2_1 values('2020-04-18 15:00:00.000', 1, false, 'json1')")
         tdSql.query("select 'sss',33,a.jtag->'loc' from db_json_tag_test.jsons2 a,db_json_tag_test.jsons3 b where a.ts=b.ts and a.jtag->'loc'=b.jtag->'loc'")
         tdSql.checkData(0, 0, "sss")
-        tdSql.checkData(0, 2, "fff")
+        tdSql.checkData(0, 2, "\"fff\"")
     
         # test group by & order by   string
         tdSql.query("select avg(dataint),count(*) from db_json_tag_test.jsons1 group by jtag->'location' order by jtag->'location' desc")
         tdSql.checkData(1, 0, 2.5)
         tdSql.checkData(1, 1, 2)
-        tdSql.checkData(1, 2, "beijing")
+        tdSql.checkData(1, 2, "\"beijing\"")
         tdSql.checkData(2, 2, None)
 
         # test group by & order by   int