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Revise qual selectivity

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This commit is contained in:
xianyu-w
2024-01-23 14:42:47 +00:00
committed by ob-robot
parent 65184014c4
commit a0c157ebd7
2 changed files with 4 additions and 2 deletions
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4
src/sql/optimizer/ob_opt_selectivity.cpp
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@ -610,6 +610,8 @@ int ObOptSelectivity::calculate_selectivity(const OptTableMetas &table_metas,
// do nothing
} else if (OB_FAIL(estimator->get_sel(table_metas, ctx, single_sel, all_predicate_sel))) {
LOG_WARN("failed to calculate one qual selectivity", KPC(estimator), K(qual), K(ret));
} else if (FALSE_IT(single_sel = revise_between_0_1(single_sel))) {
// never reach
} else if (OB_FAIL(add_var_to_array_no_dup(all_predicate_sel, ObExprSelPair(qual, single_sel)))) {
LOG_WARN("fail ed to add selectivity to plan", K(ret), K(qual), K(selectivity));
} else {
@ -630,7 +632,7 @@ int ObOptSelectivity::calculate_selectivity(const OptTableMetas &table_metas,
} else if (OB_FAIL(estimator->get_sel(table_metas, ctx, tmp_selectivity, all_predicate_sel))) {
LOG_WARN("failed to get sel", K(ret), KPC(estimator));
} else {
selectivities.at(i) = tmp_selectivity;
selectivities.at(i) = revise_between_0_1(tmp_selectivity);
if (ObSelEstType::RANGE == estimator->get_type()) {
ObRangeSelEstimator *range_estimator = static_cast<ObRangeSelEstimator *>(estimator);
if (OB_FAIL(add_var_to_array_no_dup(all_predicate_sel,

2
src/sql/optimizer/ob_sel_estimator.cpp
View File

@ -1725,7 +1725,7 @@ int ObBoolOpSelEstimator::get_sel(const OptTableMetas &table_metas,
} else {
// not op.
// if can calculate null_sel, sel = 1.0 - null_sel - op_sel
selectivity = 1.0 - null_sel - tmp_selectivity;
selectivity = ObOptSelectivity::revise_between_0_1(1.0 - null_sel - tmp_selectivity);
}
} else {
// for other condition, it's is too hard to consider null_sel, so ignore it.