patch bugfix to master

src/sql/ob_sql_utils.h

@@ -771,6 +771,17 @@ private:
   int64_t init_size_;
 };
 
+class JsonObjectStarChecker : public RelExprCheckerBase
+{
+public:
+  JsonObjectStarChecker(common::ObIArray<ObRawExpr *> &rel_array);
+  virtual ~JsonObjectStarChecker() {}
+  int add_expr(ObRawExpr *&expr);
+private:
+  common::ObIArray<ObRawExpr *> &rel_array_;
+  int64_t init_size_;
+};
+
 struct ObSqlTraits
 {
   char sql_id_[common::OB_MAX_SQL_ID_LENGTH + 1];// sql id //最后一个字节存放'\0'