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Copy pathob_log_select_into.cpp
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78 lines (72 loc) · 2.6 KB
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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.
*/
#define USING_LOG_PREFIX SQL_OPT
#include "ob_log_select_into.h"
#include "ob_log_table_scan.h"
#include "ob_optimizer_util.h"
#include "ob_opt_est_cost.h"
using namespace oceanbase::sql;
using namespace oceanbase::common;
using namespace oceanbase::sql::log_op_def;
int ObLogSelectInto::est_cost()
{
int ret = OB_SUCCESS;
int parallel = 0.0;
ObLogicalOperator *child = NULL;
if (OB_ISNULL(get_plan()) ||
OB_ISNULL(child = get_child(first_child))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(child), K(ret));
} else if (OB_UNLIKELY((parallel = get_parallel()) < 1)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected parallel degree", K(parallel), K(ret));
} else {
ObOptimizerContext &opt_ctx = get_plan()->get_optimizer_context();
set_op_cost(ObOptEstCost::cost_get_rows(child->get_card() / parallel,
opt_ctx));
set_cost(op_cost_ + child->get_cost());
set_card(child->get_card());
}
return ret;
}
int ObLogSelectInto::compute_plan_type()
{
int ret = OB_SUCCESS;
ObLogicalOperator *child = NULL;
if (OB_ISNULL(child = get_child(first_child))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(child), K(ret));
} else if (OB_FAIL(ObLogicalOperator::compute_plan_type())) {
LOG_WARN("failed to compute plan type", K(ret));
} else if (LOG_EXCHANGE == child->get_type()) {
location_type_ = ObPhyPlanType::OB_PHY_PLAN_UNCERTAIN;
} else { /*do nothing*/ }
return ret;
}
int ObLogSelectInto::get_op_exprs(ObIArray<ObRawExpr*> &all_exprs)
{
int ret = OB_SUCCESS;
if (OB_FAIL(append(all_exprs, select_exprs_))) {
LOG_WARN("failed to push back select exprs", K(ret));
} else if (OB_FAIL(ObLogicalOperator::get_op_exprs(all_exprs))) {
LOG_WARN("failed to get op exprs", K(ret));
} else { /*do nothing*/ }
return ret;
}
int ObLogSelectInto::inner_replace_op_exprs(ObRawExprReplacer &replacer)
{
int ret = OB_SUCCESS;
if (OB_FAIL(replace_exprs_action(replacer, select_exprs_))) {
LOG_WARN("failed to replace select exprs", K(ret));
}
return ret;
}