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fix late materialization and topk hint bug

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This commit is contained in:
wangt1xiuyi
2021-08-26 12:37:17 +08:00
committed by wangzelin.wzl
parent 5462fd51be
commit d1cd5d4780
2 changed files with 5 additions and 3 deletions
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7
src/sql/optimizer/ob_select_log_plan.cpp
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@ -2261,11 +2261,12 @@ int ObSelectLogPlan::candi_allocate_late_materialization()
} else {
bool use_late_mat = false;
ObLogicalOperator* best_plan = NULL;
ObLogTableScan* index_scan = NULL;
ObLogTableScan* best_index_scan = NULL;
TableItem* nl_table_item = NULL;
ObLogTableScan* nl_table_get = NULL;
for (int64_t i = 0; OB_SUCC(ret) && i < candidates_.candidate_plans_.count(); ++i) {
bool need = false;
ObLogTableScan* index_scan = NULL;
CandidatePlan& plain_plan = candidates_.candidate_plans_.at(i);
if (OB_FAIL(if_plan_need_late_materialization(plain_plan.plan_tree_, index_scan, need))) {
LOG_WARN("failed to check if need late materialization", K(ret));
@ -2288,6 +2289,7 @@ int ObSelectLogPlan::candi_allocate_late_materialization()
} else if (NULL == best_plan || plain_plan.plan_tree_->get_cost() < best_plan->get_cost()) {
best_plan = plain_plan.plan_tree_;
use_late_mat = need;
best_index_scan = index_scan;
} else { /*do nothing*/
}
}
@ -2300,7 +2302,8 @@ int ObSelectLogPlan::candi_allocate_late_materialization()
if (OB_FAIL(candidates_.candidate_plans_.push_back(CandidatePlan(best_plan)))) {
LOG_WARN("failed to push back candidate plan", K(ret));
} else if (use_late_mat && !get_optimizer_context().is_cost_evaluation() &&
OB_FAIL(adjust_late_materialization_structure(best_plan, index_scan, nl_table_get, nl_table_item))) {
OB_FAIL(adjust_late_materialization_structure(
best_plan, best_index_scan, nl_table_get, nl_table_item))) {
LOG_WARN("failed to adjust late materialization stmt", K(ret));
} else {
candidates_.plain_plan_.first = best_plan->get_cost();