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[CP] [CP] fix table scan range cost bug

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This commit is contained in:
chimyue
2024-01-11 13:19:22 +00:00
committed by ob-robot
parent 3f9ef31b72
commit 2c302ee318
4 changed files with 43 additions and 5 deletions
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7
src/sql/optimizer/ob_opt_est_cost_model.cpp
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@ -102,6 +102,7 @@ int ObCostTableScanInfo::assign(const ObCostTableScanInfo &est_cost_info)
batch_type_ = est_cost_info.batch_type_;
sample_info_ = est_cost_info.sample_info_;
use_column_store_ = est_cost_info.use_column_store_;
at_most_one_range_ = est_cost_info.at_most_one_range_;
// no need to copy table scan param
}
return ret;
@ -1773,7 +1774,11 @@ int ObOptEstCostModel::range_scan_cpu_cost(const ObCostTableScanInfo &est_cost_i
}
// CPU代价，包括get_next_row调用的代价和谓词代价
double range_cost = 0;
range_cost = est_cost_info.ranges_.count() * cost_params_.get_range_cost(sys_stat_);
double range_count = est_cost_info.ranges_.count();
if (range_count > 1 && est_cost_info.at_most_one_range_) {
range_count = 1;
}
range_cost = range_count * cost_params_.get_range_cost(sys_stat_);
cost = row_count * cost_params_.get_cpu_tuple_cost(sys_stat_);
cost += range_cost + qual_cost + project_cost;