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src/sql/engine/expr/ob_expr_merging_frozen_time.cpp

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+/**
+ * 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.
+ */
+
+#include "sql/engine/expr/ob_expr_merging_frozen_time.h"
+#include "lib/ob_name_def.h"
+
+namespace oceanbase {
+using namespace common;
+namespace sql {
+
+ObExprMergingFrozenTime::ObExprMergingFrozenTime(ObIAllocator& alloc)
+    : ObFuncExprOperator(alloc, T_FUN_SYS_MERGING_FROZEN_TIME, N_MERGING_FROZEN_TIME, 0, NOT_ROW_DIMENSION)
+{}
+
+ObExprMergingFrozenTime::~ObExprMergingFrozenTime()
+{}
+
+int ObExprMergingFrozenTime::calc_result_type0(ObExprResType& type, ObExprTypeCtx& type_ctx) const
+{
+  UNUSED(type_ctx);
+  type.set_timestamp();
+  type.set_scale(MAX_SCALE_FOR_TEMPORAL);
+  return OB_SUCCESS;
+}
+
+}  // namespace sql
+}  // namespace oceanbase