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[CP] support virtual table and core table gather stats and use stats

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This commit is contained in:
wangt1xiuyi
2023-03-03 03:40:59 +00:00
committed by ob-robot
parent d91c405414
commit 170ebd9ba9
18 changed files with 492 additions and 137 deletions
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12
src/sql/optimizer/ob_access_path_estimation.cpp
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@ -40,10 +40,10 @@ int ObAccessPathEstimation::estimate_rowcount(ObOptimizerContext &ctx,
// but it has serveral limitations, hence we check its usage here
for (int64_t i = 0; OB_SUCC(ret) && i < paths.count(); ++i) {
RowCountEstMethod method;
bool is_vt = false;
if (OB_FAIL(choose_best_estimation_method(paths.at(i), meta, method, is_vt))) {
bool use_default_vt = false;
if (OB_FAIL(choose_best_estimation_method(paths.at(i), meta, method, use_default_vt))) {
LOG_WARN("failed to choose best estimation method", K(ret));
} else if (is_vt) {
} else if (use_default_vt) {
if (OB_FAIL(process_vtable_estimation(paths.at(i)))) {
LOG_WARN("failed to process virtual table estimation", K(ret));
}
@ -67,7 +67,7 @@ int ObAccessPathEstimation::estimate_rowcount(ObOptimizerContext &ctx,
int ObAccessPathEstimation::choose_best_estimation_method(const AccessPath *path,
const ObTableMetaInfo &meta,
RowCountEstMethod &method,
bool &is_vt)
bool &use_default_vt)
{
int ret = OB_SUCCESS;
const ObTablePartitionInfo *part_info = NULL;
@ -76,8 +76,8 @@ int ObAccessPathEstimation::choose_best_estimation_method(const AccessPath *path
LOG_WARN("access path is invalid", K(ret), K(path));
} else if (is_virtual_table(path->ref_table_id_) &&
!share::is_oracle_mapping_real_virtual_table(path->ref_table_id_)) {
method = RowCountEstMethod::DEFAULT_STAT;
is_vt = true;
use_default_vt = !meta.has_opt_stat_;
method = meta.has_opt_stat_ ? RowCountEstMethod::BASIC_STAT : RowCountEstMethod::DEFAULT_STAT;
} else {
if (meta.is_empty_table_) {
method = RowCountEstMethod::BASIC_STAT;