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[FEAT MERGE]logical plan move to plan cache module add feedback into to plan

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This commit is contained in:
zzg19950727
2023-04-18 11:41:58 +00:00
committed by ob-robot
parent e392fc2a37
commit 8daff3e658
122 changed files with 45692 additions and 43707 deletions
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46
src/sql/optimizer/ob_opt_est_cost_model.cpp
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@ -1164,44 +1164,14 @@ int ObOptEstCostModel::cost_table(ObCostTableScanInfo &est_cost_info,
double &index_back_cost)
{
int ret = OB_SUCCESS;
if (is_virtual_table(est_cost_info.ref_table_id_) &&
(est_cost_info.row_est_method_ == RowCountEstMethod::INVALID_METHOD ||
est_cost_info.row_est_method_ == RowCountEstMethod::DEFAULT_STAT)) {
if (OB_FAIL(cost_virtual_table(est_cost_info, cost))) {
LOG_WARN("failed to estimate virtual table cost", K(ret));
} else {
index_back_cost = 0;
}
} else {
if (OB_FAIL(cost_normal_table(est_cost_info,
parallel,
query_range_row_count,
phy_query_range_row_count,
cost,
index_back_cost))) {
LOG_WARN("failed to estimate table cost", K(ret));
} else { /*do nothing*/ }
}
return ret;
}
// estimate cost for virtual table
int ObOptEstCostModel::cost_virtual_table(ObCostTableScanInfo &est_cost_info,
double &cost)
{
int ret = OB_SUCCESS;
if (0 == est_cost_info.ranges_.count()) {
cost = VIRTUAL_INDEX_GET_COST * static_cast<double>(OB_EST_DEFAULT_VIRTUAL_TABLE_ROW_COUNT);
LOG_TRACE("OPT:[VT] virtual table without range, use default stat", K(cost));
} else {
cost = VIRTUAL_INDEX_GET_COST * static_cast<double>(est_cost_info.ranges_.count());
// refine the cost if it is not exact match
if (!est_cost_info.is_unique_) {
cost *= 100.0;
}
LOG_TRACE("OPT:[VT] virtual table with range, init est", K(cost),
K(est_cost_info.ranges_.count()));
}
if (OB_FAIL(cost_normal_table(est_cost_info,
parallel,
query_range_row_count,
phy_query_range_row_count,
cost,
index_back_cost))) {
LOG_WARN("failed to estimate table cost", K(ret));
} else { /*do nothing*/ }
return ret;
}