237 lines
8.2 KiB
C++
237 lines
8.2 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX SQL_OPT
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#include "ob_log_update.h"
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#include "sql/optimizer/ob_del_upd_log_plan.h"
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#include "sql/optimizer/ob_log_plan.h"
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#include "sql/rewrite/ob_transform_utils.h"
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#include "sql/optimizer/ob_opt_est_cost.h"
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#include "sql/optimizer/ob_join_order.h"
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#include "common/ob_smart_call.h"
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using namespace oceanbase;
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using namespace sql;
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using namespace oceanbase::common;
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using namespace oceanbase::share::schema;
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int ObLogUpdate::get_plan_item_info(PlanText &plan_text,
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ObSqlPlanItem &plan_item)
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{
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int ret = OB_SUCCESS;
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if (OB_FAIL(ObLogDelUpd::get_plan_item_info(plan_text, plan_item))) {
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LOG_WARN("failed to get plan item info", K(ret));
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} else {
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BEGIN_BUF_PRINT;
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if (OB_FAIL(print_table_infos(ObString::make_string("table_columns"),
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buf,
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buf_len,
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pos,
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type))) {
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LOG_WARN("failed to print table infos", K(ret));
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} else if (need_barrier()) {
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ret = BUF_PRINTF(", ");
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ret = BUF_PRINTF("with_barrier");
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}
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if (OB_FAIL(ret)) {
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} else if (OB_FAIL(BUF_PRINTF(",\n "))) {
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LOG_WARN("BUF_PRINTF fails", K(ret));
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} else if (OB_FAIL(BUF_PRINTF("update("))) {
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LOG_WARN("BUF_PRINTF fails", K(ret));
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} else { /* Do nothing */ }
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bool has_assign = false;
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for (int64_t k = 0; OB_SUCC(ret) && k < get_index_dml_infos().count(); ++k) {
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const IndexDMLInfo *info = get_index_dml_infos().at(k);
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if (OB_ISNULL(info)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("info is null", K(ret));
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} else if (!info->is_primary_index_ && !is_pdml()) {
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continue;
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} else {
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const int64_t N = info->assignments_.count();
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for (int64_t i = 0; OB_SUCC(ret) && i < N; ++i) {
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OZ(BUF_PRINTF("["));
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CK(OB_NOT_NULL(info->assignments_.at(i).column_expr_));
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OZ(info->assignments_.at(i).column_expr_->get_name(buf, buf_len, pos, type));
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OZ(BUF_PRINTF("="));
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CK(OB_NOT_NULL(info->assignments_.at(i).expr_));
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OZ(info->assignments_.at(i).expr_->get_name(buf, buf_len, pos, type));
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OZ(BUF_PRINTF("]"));
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OZ(BUF_PRINTF(", "));
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has_assign = true;
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}
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}
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}
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if (OB_SUCC(ret) && has_assign) {
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pos = pos - 2;
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}
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OZ(BUF_PRINTF(")"));
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END_BUF_PRINT(plan_item.special_predicates_,
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plan_item. special_predicates_len_);
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}
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return ret;
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}
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const char *ObLogUpdate::get_name() const
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{
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const char *name = NULL;
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if (is_pdml()) {
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if (is_index_maintenance()) {
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name = "INDEX UPDATE";
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} else {
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name = ObLogDelUpd::get_name();
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}
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} else if (is_multi_part_dml()) {
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name = "DISTRIBUTED UPDATE";
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} else {
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name = ObLogDelUpd::get_name();
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}
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return name;
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}
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int ObLogUpdate::get_op_exprs(ObIArray<ObRawExpr*> &all_exprs)
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{
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int ret = OB_SUCCESS;
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if (OB_ISNULL(get_plan())) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("get unexpected null", K(get_plan()), K(ret));
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} else if (OB_FAIL(ObLogDelUpd::inner_get_op_exprs(all_exprs, true))) {
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LOG_WARN("failed to add parent need expr", K(ret));
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}
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return ret;
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}
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int ObLogUpdate::est_cost()
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{
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int ret = OB_SUCCESS;
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ObLogicalOperator *child = NULL;
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if (OB_ISNULL(child = get_child(ObLogicalOperator::first_child))) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("child is null", K(ret));
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} else {
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double op_cost = 0.0;
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if (OB_FAIL(inner_est_cost(child->get_card(), op_cost))) {
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LOG_WARN("failed to get update cost", K(ret));
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} else {
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set_op_cost(op_cost);
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set_cost(child->get_cost() + get_op_cost());
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set_card(child->get_card());
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}
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}
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return ret;
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}
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int ObLogUpdate::do_re_est_cost(EstimateCostInfo ¶m, double &card, double &op_cost, double &cost)
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{
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int ret = OB_SUCCESS;
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ObLogicalOperator *child = NULL;
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if (OB_ISNULL(child = get_child(ObLogicalOperator::first_child))) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("get unexpected null", K(child), K(ret));
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} else {
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double child_card = child->get_card();
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double child_cost = child->get_cost();
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if (OB_FAIL(SMART_CALL(child->re_est_cost(param, child_card, child_cost)))) {
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LOG_WARN("failed to re est exchange cost", K(ret));
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} else if (OB_FAIL(inner_est_cost(child_card, op_cost))) {
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LOG_WARN("failed to get update cost", K(ret));
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} else {
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cost = child_cost + op_cost;
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card = child_card;
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}
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}
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return ret;
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}
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int ObLogUpdate::inner_est_cost(double child_card, double &op_cost)
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{
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int ret = OB_SUCCESS;
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ObDelUpCostInfo cost_info(0,0,0);
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cost_info.affect_rows_ = child_card;
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cost_info.index_count_ = get_index_dml_infos().count();
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IndexDMLInfo* update_dml_info = nullptr;
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if (OB_ISNULL(get_plan()) || OB_UNLIKELY(cost_info.index_count_ <= 0) ||
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OB_ISNULL(update_dml_info = get_index_dml_infos().at(0))) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("get unexpected null", K(ret), K(get_plan()), K(update_dml_info));
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} else {
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ObOptimizerContext &opt_ctx = get_plan()->get_optimizer_context();
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cost_info.constraint_count_ = update_dml_info->ck_cst_exprs_.count();
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if (OB_FAIL(ObOptEstCost::cost_update(cost_info, op_cost,
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opt_ctx))) {
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LOG_WARN("failed to get update cost", K(ret));
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}
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}
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return ret;
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}
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int ObLogUpdate::generate_rowid_expr_for_trigger()
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{
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int ret = OB_SUCCESS;
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if (lib::is_oracle_mode() && !has_instead_of_trigger()) {
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for (int64_t i = 0; OB_SUCC(ret) && i < get_index_dml_infos().count(); ++i) {
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bool has_trg = false;
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IndexDMLInfo *dml_info = get_index_dml_infos().at(i);
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if (OB_ISNULL(dml_info)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("dml info is null", K(ret), K(dml_info));
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} else if (!dml_info->is_primary_index_) {
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// do nothing
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} else if (OB_FAIL(check_has_trigger(dml_info->ref_table_id_, has_trg))) {
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LOG_WARN("failed to check has trigger", K(ret));
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} else if (!has_trg) {
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// do nothing
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} else if (OB_FAIL(generate_old_rowid_expr(*dml_info))) {
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LOG_WARN("failed to generate rowid expr", K(ret));
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} else if (OB_FAIL(generate_update_new_rowid_expr(*dml_info))) {
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LOG_WARN("failed to generate new rowid expr", K(ret));
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} else { /*do nothing*/ }
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}
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}
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return ret;
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}
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int ObLogUpdate::generate_part_id_expr_for_foreign_key(ObIArray<ObRawExpr*> &all_exprs)
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{
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int ret = OB_SUCCESS;
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for (int64_t i = 0; OB_SUCC(ret) && i < get_index_dml_infos().count(); ++i) {
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IndexDMLInfo *dml_info = get_index_dml_infos().at(i);
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if (OB_ISNULL(dml_info)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("dml info is null", K(ret), K(dml_info));
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} else if (!dml_info->is_primary_index_) {
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// do nothing
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} else if (OB_FAIL(generate_fk_lookup_part_id_expr(*dml_info))) {
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LOG_WARN("failed to generate lookup part expr for foreign key", K(ret));
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} else if (OB_FAIL(convert_update_new_fk_lookup_part_id_expr(all_exprs, *dml_info))) {
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LOG_WARN("failed to convert lookup part expr for foreign key", K(ret));
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}
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}
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return ret;
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}
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int ObLogUpdate::generate_multi_part_partition_id_expr()
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{
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int ret = OB_SUCCESS;
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for (int64_t i = 0; OB_SUCC(ret) && i < get_index_dml_infos().count(); ++i) {
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if (OB_ISNULL(get_index_dml_infos().at(i))) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("index dml info is null", K(ret));
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} else if (OB_FAIL(generate_old_calc_partid_expr(*get_index_dml_infos().at(i)))) {
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LOG_WARN("failed to generate calc partid expr", K(ret));
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} else if (OB_FAIL(generate_update_new_calc_partid_expr(*get_index_dml_infos().at(i)))) {
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LOG_WARN("failed to generate new calc partid expr", K(ret));
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} else { /*do nothing*/ }
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}
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return ret;
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}
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