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replace ts related to ddl with scn.

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This commit is contained in:
obdev
2022-11-28 02:21:13 +00:00
committed by ob-robot
parent bbec6aff49
commit 8a4d14122f
539 changed files with 17685 additions and 173434 deletions
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19
src/sql/rewrite/ob_transform_eliminate_outer_join.cpp
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@ -103,7 +103,6 @@ int ObTransformEliminateOuterJoin::recursive_eliminate_outer_join_in_table_item(
bool &trans_happened)
{
int ret = OB_SUCCESS;
bool do_trans = false;
bool is_stack_overflow = false;
bool is_my_joined_table_type = false;
JoinedTable *process_join = NULL;
@ -125,15 +124,19 @@ int ObTransformEliminateOuterJoin::recursive_eliminate_outer_join_in_table_item(
} else if (is_my_joined_table_type) {
//子表无法从stmt中查找，只能通过指针转换得到joined_table
process_join = static_cast<JoinedTable*>(cur_table_item);
bool is_happened = false;
ret = do_eliminate_outer_join(stmt,
process_join,
from_item_list,
joined_table_list,
conditions,
should_move_to_from_list,
do_trans);
is_happened);
//继续处理左右子表
if (OB_SUCC(ret)) {
trans_happened |= is_happened;
bool child_should_move_to_from_list = is_happened && should_move_to_from_list
&& INNER_JOIN == process_join->joined_type_;
TableItem *l_child = process_join->left_table_;
TableItem *r_child = process_join->right_table_;
ObSEArray<ObRawExpr*, 4> left_child_conditions;
@ -147,7 +150,7 @@ int ObTransformEliminateOuterJoin::recursive_eliminate_outer_join_in_table_item(
from_item_list,
joined_table_list,
left_child_conditions,
do_trans & should_move_to_from_list,
child_should_move_to_from_list,
trans_happened)))) {
LOG_WARN("failed to process the left child", K(ret), K(r_child));
} else {
@ -162,18 +165,13 @@ int ObTransformEliminateOuterJoin::recursive_eliminate_outer_join_in_table_item(
from_item_list,
joined_table_list,
right_child_conditions,
do_trans & should_move_to_from_list,
child_should_move_to_from_list,
trans_happened)))) {
LOG_WARN("failed to process the right child", K(ret), K(r_child));
} else {
/*do nothing*/
}
}
if (do_trans && should_move_to_from_list) {
trans_happened = true;
} else {
/*do nothing*/
}
} else {
/*do nothing*/
}
@ -263,6 +261,7 @@ int ObTransformEliminateOuterJoin::do_eliminate_outer_join(ObDMLStmt *stmt,
LOG_WARN("failed to test eliminated left join condition", K(ret));
} else if (can_eliminate) {
//left join消除后，旋转right join为左连接
trans_happened = true;
TableItem* temp = cur_joined_table->left_table_;
cur_joined_table->left_table_ = cur_joined_table->right_table_;
cur_joined_table->right_table_ = temp;
@ -278,6 +277,7 @@ int ObTransformEliminateOuterJoin::do_eliminate_outer_join(ObDMLStmt *stmt,
if (OB_FAIL(can_be_eliminated(stmt, cur_joined_table, conditions, can_eliminate))) {
LOG_WARN("failed to test eliminated right join condition", K(ret));
} else if (can_eliminate) {
trans_happened = true;
if (cur_joined_table->joined_type_ == LEFT_OUTER_JOIN) {
cur_joined_table->joined_type_ = INNER_JOIN;
} else {
@ -304,6 +304,7 @@ int ObTransformEliminateOuterJoin::do_eliminate_outer_join(ObDMLStmt *stmt,
if (OB_FAIL(can_be_eliminated(stmt, cur_joined_table, conditions, can_eliminate))) {
LOG_WARN("failed to test eliminated left join condition", K(ret));
} else if (can_eliminate) {
trans_happened = true;
cur_joined_table->joined_type_ = INNER_JOIN;
} else {
/*do nothing*/