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[FEAT MERGE] [CP] Improve the rowcount estimation

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Co-authored-by: akaError <lzg020616@163.com>
This commit is contained in:
xianyu-w
2024-01-22 04:12:26 +00:00
committed by ob-robot
parent a125d6cf00
commit d2ab1a4aae
70 changed files with 5953 additions and 3722 deletions
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73
src/sql/optimizer/ob_log_table_scan.cpp
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@ -1062,39 +1062,6 @@ int ObLogTableScan::pick_out_query_range_exprs()
return ret;
}
int ObLogTableScan::pick_out_startup_filters()
{
int ret = OB_SUCCESS;
ObLogPlan *plan = get_plan();
const ParamStore *params = NULL;
ObOptimizerContext *opt_ctx = NULL;
ObArray<ObRawExpr *> filter_exprs;
if (OB_ISNULL(plan)
|| OB_ISNULL(opt_ctx = &plan->get_optimizer_context())
|| OB_ISNULL(params = opt_ctx->get_params())) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("NULL pointer error", K(plan), K(opt_ctx), K(ret));
} else if (OB_FAIL(filter_exprs.assign(filter_exprs_))) {
LOG_WARN("assign filter exprs failed", K(ret));
} else {
filter_exprs_.reset();
}
for (int64_t i = 0; OB_SUCC(ret) && i < filter_exprs.count(); ++i) {
ObRawExpr *qual = filter_exprs.at(i);
if (OB_ISNULL(qual)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpect null expr", K(ret));
} else if (qual->is_static_const_expr()) {
if (OB_FAIL(startup_exprs_.push_back(qual))) {
LOG_WARN("add filter expr failed", K(i), K(ret));
} else { /* Do nothing */ }
} else if (OB_FAIL(filter_exprs_.push_back(qual))) {
LOG_WARN("add filter expr failed", K(i), K(ret));
} else { /* Do nothing */ }
}
return ret;
}
int ObLogTableScan::init_calc_part_id_expr()
{
int ret = OB_SUCCESS;
@ -1274,6 +1241,9 @@ int ObLogTableScan::get_plan_item_info(PlanText &plan_text,
LOG_WARN("BUF_PRINTF fails", K(ret));
} else if (OB_FAIL(BUF_PRINTF("dynamic sampling level:%ld", table_meta->get_ds_level()))) {
LOG_WARN("BUF_PRINTF fails", K(ret));
} else if (OB_NOT_NULL(est_cost_info_) &&
OB_FAIL(print_est_method(est_cost_info_->est_method_, buf, buf_len, pos))) {
LOG_WARN("failed to print est method", K(ret));
}
END_BUF_PRINT(plan_item.optimizer_, plan_item.optimizer_len_);
}
@ -1344,6 +1314,41 @@ int ObLogTableScan::get_plan_item_info(PlanText &plan_text,
return ret;
}
int ObLogTableScan::print_est_method(ObBaseTableEstMethod method, char *buf, int64_t &buf_len, int64_t &pos)
{
int ret = OB_SUCCESS;
if (method == EST_INVALID) {
// do nothing
} else if (OB_FAIL(BUF_PRINTF(NEW_LINE))) {
LOG_WARN("BUF_PRINTF fails", K(ret));
} else if (OB_FAIL(BUF_PRINTF(OUTPUT_PREFIX))) {
LOG_WARN("BUF_PRINTF fails", K(ret));
} else if (OB_FAIL(BUF_PRINTF("estimation method:["))) {
LOG_WARN("BUF_PRINTF fails", K(ret));
} else if ((EST_DEFAULT & method) &&
OB_FAIL(BUF_PRINTF("DEFAULT, "))) {
LOG_WARN("BUF_PRINTF fails");
} else if ((EST_STAT & method) &&
OB_FAIL(BUF_PRINTF("OPTIMIZER STATISTICS, "))) {
LOG_WARN("BUF_PRINTF fails");
} else if ((EST_STORAGE & method) &&
OB_FAIL(BUF_PRINTF("STORAGE, "))) {
LOG_WARN("BUF_PRINTF fails");
} else if (((EST_DS_BASIC) & method) &&
OB_FAIL(BUF_PRINTF("DYNAMIC SAMPLING BASIC, "))) {
LOG_WARN("BUF_PRINTF fails");
} else if (((EST_DS_FULL) & method) &&
OB_FAIL(BUF_PRINTF("DYNAMIC SAMPLING FULL, "))) {
LOG_WARN("BUF_PRINTF fails");
} else {
pos -= 2;
if (OB_FAIL(BUF_PRINTF("]"))) {
LOG_WARN("BUF_PRINTF fails");
}
}
return ret;
}
int ObLogTableScan::get_plan_object_info(PlanText &plan_text,
ObSqlPlanItem &plan_item)
{
@ -2048,7 +2053,7 @@ bool ObLogTableScan::is_need_feedback() const
ret = sel >= SELECTION_THRESHOLD && !is_multi_part_table_scan_;
LOG_TRACE("is_need_feedback", K(estimate_method_), K(table_row_count),
LOG_TRACE("is_need_feedback", K(table_row_count),
K(logical_query_range_row_count), K(sel), K(ret));
return ret;
}