Merge pull request #7489 from jtcheng/codereview/comments

'select current_database(); should be select database();' in code comments

src/client/src/tscSQLParser.c

@@ -8807,7 +8807,7 @@ int32_t validateSqlNode(SSqlObj* pSql, SSqlNode* pSqlNode, SQueryInfo* pQueryInf
    * select server_status();
    * select server_version();
    * select client_version();
-   * select current_database();
+   * select database();
    */
   if (pSqlNode->from == NULL) {
     assert(pSqlNode->fillType == NULL && pSqlNode->pGroupby == NULL && pSqlNode->pWhere == NULL &&

src/query/inc/sql.y

@@ -496,7 +496,7 @@ union(Y) ::= union(Z) UNION ALL select(X). { Y = appendSelectClause(Z, X); }
 cmd ::= union(X). { setSqlInfo(pInfo, X, NULL, TSDB_SQL_SELECT); }
 
 // Support for the SQL exprssion without from & where subclauses, e.g.,
-// select current_database()
+// select database()
 // select server_version()
 // select client_version()
 // select server_state()