init push

src/sql/engine/expr/ob_expr_promotion_util.h

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#ifndef _OB_EXPR_PROMOTION_UTIL_H_
+#define _OB_EXPR_PROMOTION_UTIL_H_
+
+//#include "sql/engine/expr/ob_expr_operator.h"
+#include "common/object/ob_obj_type.h"
+//#include "common/expression/ob_expr_string_buf.h"
+//#include "lib/timezone/ob_timezone_info.h"
+
+namespace oceanbase {
+namespace sql {
+class ObExprResType;
+class ObExprPromotionUtil {
+  public:
+  static int get_nvl_type(ObExprResType& type, const ObExprResType& type1, const ObExprResType& type2);
+
+  private:
+  static int get_calc_type(ObExprResType& type, const ObExprResType& type1, const ObExprResType& type2,
+      const common::ObObjType map[common::ObMaxTC][common::ObMaxTC]);
+};
+
+}  // namespace sql
+}  // namespace oceanbase
+#endif /* _OB_EXPR_PROMOTION_UTIL_H_ */