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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
2024-02-09 19:58:18 +00:00
committed by ob-robot
parent da232dc640
commit dc32079645
70 changed files with 5953 additions and 3722 deletions
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59
src/sql/optimizer/ob_logical_operator.cpp
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@ -1097,6 +1097,7 @@ int ObLogicalOperator::re_est_cost(EstimateCostInfo &param, double &card, double
param.need_row_count_ = (get_card() <= param.need_row_count_ || 0 > param.need_row_count_)
? -1 : param.need_row_count_;
double op_cost = 0.0;
bool contain_false_filter = false;
card = 0.0;
cost = 0.0;
if (!param.need_re_est(get_parallel(), get_card())) { // no need to re est cost
@ -1106,6 +1107,10 @@ int ObLogicalOperator::re_est_cost(EstimateCostInfo &param, double &card, double
LOG_WARN("failed to check need parallel valid", K(ret));
} else if (OB_FAIL(SMART_CALL(do_re_est_cost(param, card, op_cost, cost)))) {
LOG_WARN("failed to do re est operator", K(ret));
} else if (OB_FAIL(check_contain_false_startup_filter(contain_false_filter))) {
LOG_WARN("failed to check startup filter", K(ret));
} else if (contain_false_filter && FALSE_IT(card = 0.0)) {
// never reach
} else if (!param.override_) {
/* do nothing */
} else if (OB_ISNULL(get_plan())) {
@ -5657,6 +5662,60 @@ int ObLogicalOperator::collect_batch_exec_param_post(void* ctx)
return ret;
}
int ObLogicalOperator::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 ObLogicalOperator::check_contain_false_startup_filter(bool &contain_false)
{
int ret = OB_SUCCESS;
contain_false = false;
if (OB_ISNULL(get_plan())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("NULL pointer error", K(get_plan()), K(ret));
}
for (int64_t i = 0; OB_SUCC(ret) && i < startup_exprs_.count(); ++i) {
ObRawExpr *qual = startup_exprs_.at(i);
if (OB_ISNULL(qual)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpect null expr", K(ret));
} else if (OB_FAIL(ObOptimizerUtil::check_is_static_false_expr(
get_plan()->get_optimizer_context(), *qual, contain_false))) {
LOG_WARN("failed to check is static false", K(ret));
} else { /* Do nothing */ }
}
return ret;
}
int ObLogicalOperator::collect_batch_exec_param(void* ctx,
const ObIArray<ObExecParamRawExpr*> &exec_params,
ObIArray<ObExecParamRawExpr *> &left_above_params,