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[FEAT MERGE] DAS iterator refactor and keep order optimization

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Co-authored-by: saltonz <saltonzh@gmail.com>
Co-authored-by: zhenhan.gong@gmail.com <zhenhan.gong@gmail.com>
Co-authored-by: Tyshawn <tuyunshan@gmail.com>
This commit is contained in:
pe-99y
2024-06-24 13:57:14 +00:00
committed by ob-robot
parent 7f3ce430fb
commit 5c5e6da6ce
88 changed files with 7062 additions and 2432 deletions
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56
src/sql/optimizer/ob_logical_operator.cpp
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@ -6288,7 +6288,11 @@ int ObLogicalOperator::check_use_child_ordering(bool &used, int64_t &inherit_chi
} else {
used = true;
}
inherit_child_ordering_index = first_child;
if (LOG_TEMP_TABLE_TRANSFORMATION == get_type()) {
inherit_child_ordering_index = get_num_of_child()-1;
} else {
inherit_child_ordering_index = first_child;
}
} else {
used = false;
inherit_child_ordering_index = -1;
@ -6488,36 +6492,38 @@ int ObLogicalOperator::check_op_orderding_used_by_parent(bool &used)
{
int ret = OB_SUCCESS;
used = true;
bool is_first_child = true;
bool inherit_child_ordering = true;
int64_t inherit_child_ordering_index = -1;
ObLogicalOperator *parent = get_parent();
ObLogicalOperator *child = this;
while (OB_SUCC(ret) && NULL != parent) {
if (OB_FAIL(parent->check_use_child_ordering(used, inherit_child_ordering_index))) {
LOG_WARN("failed to check use child ordering", K(ret));
} else {
inherit_child_ordering = child == parent->get_child(inherit_child_ordering_index);
if (!used && inherit_child_ordering && child->is_plan_root()) {
ObLogPlan *plan = child->get_plan();
const ObDMLStmt *stmt = NULL;
if (OB_ISNULL(plan) || OB_ISNULL(stmt=plan->get_stmt())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpect null param", K(ret));
} else if (0 == stmt->get_order_item_size()) {
//do nothing
} else {
used = true;
}
while (OB_SUCC(ret) && NULL != child) {
if (child->is_plan_root()) {
ObLogPlan *plan = child->get_plan();
const ObDMLStmt *stmt = NULL;
if (OB_ISNULL(plan) || OB_ISNULL(stmt=plan->get_stmt())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpect null param", K(ret));
} else if (0 == stmt->get_order_item_size()) {
//do nothing
} else {
used = true;
break;
}
if (NULL == parent) {
break;
}
}
if (OB_FAIL(ret)) {
} else if (used || !inherit_child_ordering) {
break;
} else {
child = parent;
parent = parent->get_parent();
if (OB_SUCC(ret) && NULL != parent) {
if (OB_FAIL(parent->check_use_child_ordering(used, inherit_child_ordering_index))) {
LOG_WARN("failed to check use child ordering", K(ret));
} else if (OB_FALSE_IT(inherit_child_ordering = child == parent->get_child(inherit_child_ordering_index))) {
} else if (used || !inherit_child_ordering) {
break;
} else {
child = parent;
parent = parent->get_parent();
}
}
}
return ret;
}
}