[TD-10700]<enhance>: fixed uppercase tag in escape quote issue

src/client/src/tscParseOpenTSDB.c

@@ -940,6 +940,7 @@ static int32_t parseTagsFromJSON(cJSON *root, TAOS_SML_KV **pKVs, int *num_kvs,
     }
     pkv->key = tcalloc(keyLen + TS_ESCAPE_CHAR_SIZE + 1, sizeof(char));
     strncpy(pkv->key, tag->string, keyLen);
+    strntolower_s(pkv->key, pkv->key, (int32_t)keyLen);
     addEscapeCharToString(pkv->key, keyLen);
     //value
     ret = parseValueFromJSON(tag, pkv, info);

tests/pytest/insert/insertJSONPayload.py

@@ -793,7 +793,7 @@ class TDTestCase:
 
         payload = ['''
         {
-	    "metric":	"123abc",
+	    "metric":	"STABLE",
 	    "timestamp":	{
 		"value":	1626006833,
 		"type":	"s"
@@ -819,7 +819,7 @@ class TDTestCase:
 			"value":	2147483647,
 			"type":	"int"
 		},
-		"from":	{
+		"INSERT":	{
 			"value":	9.2233720368547758e+18,
 			"type":	"bigint"
 		},
@@ -834,7 +834,7 @@ class TDTestCase:
         code = self._conn.schemaless_insert(payload, TDSmlProtocolType.JSON.value, TDSmlTimestampType.NOT_CONFIGURED.value)
         print("schemaless_insert result {}".format(code))
 
-        tdSql.query("describe `123abc`")
+        tdSql.query("describe `stable`")
         tdSql.checkRows(8)