TD-2850

src/client/src/tscSQLParser.c

@@ -5427,6 +5427,7 @@ int32_t validateColumnName(char* name) {
 
   if (token.type == TK_STRING) {
     strdequote(token.z);
+    strntolower(token.z, token.z, token.n);
     token.n = (uint32_t)strtrim(token.z);
 
     int32_t k = tSQLGetToken(token.z, &token.type);

src/client/src/tscUtil.c

@@ -1420,9 +1420,11 @@ int32_t tscValidateName(SStrToken* pToken) {
   char* sep = strnchr(pToken->z, TS_PATH_DELIMITER[0], pToken->n, true);
   if (sep == NULL) {  // single part
     if (pToken->type == TK_STRING) {
+       
       strdequote(pToken->z);
+      strntolower(pToken->z, pToken->z, pToken->n);
       pToken->n = (uint32_t)strtrim(pToken->z);
-
+       
       int len = tSQLGetToken(pToken->z, &pToken->type);
 
       // single token, validate it