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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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23
src/sql/optimizer/ob_optimizer_util.cpp
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@ -9494,6 +9494,29 @@ bool ObOptimizerUtil::find_superset(const ObRelIds &rel_ids,
}
return bret;
}
int ObOptimizerUtil::check_is_static_false_expr(ObOptimizerContext &opt_ctx, ObRawExpr &expr, bool &is_static_false)
{
int ret = OB_SUCCESS;
ObObj const_value;
bool got_result = false;
bool is_result_true = false;
if (!expr.is_static_const_expr()) {
// do nothing
} else if (OB_FAIL(ObSQLUtils::calc_const_or_calculable_expr(opt_ctx.get_exec_ctx(),
&expr,
const_value,
got_result,
opt_ctx.get_allocator()))) {
LOG_WARN("failed to calc const or calculable expr", K(ret));
} else if (!got_result) {
// do nothing
} else if (OB_FAIL(ObObjEvaluator::is_true(const_value, is_result_true))) {
LOG_WARN("failed to check is const value true", K(ret));
} else {
is_static_false = !is_result_true;
}
return ret;
}
int ObOptimizerUtil::check_ancestor_node_support_skip_scan(ObLogicalOperator* op, bool &can_use_batch_nlj)
{