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fix const propagate bug for calculating the partition

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This commit is contained in:
SevenJ-swj
2023-07-25 12:12:44 +00:00
committed by ob-robot
parent 91c0f81008
commit 18dfee31f9
3 changed files with 22 additions and 4 deletions
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11
src/sql/rewrite/ob_transform_const_propagate.cpp
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@ -728,6 +728,7 @@ int ObTransformConstPropagate::collect_equal_pair_from_pullup(ObDMLStmt *stmt,
ObRawExpr *select_expr = child_stmt->get_select_items().at(j).expr_;
ExprConstInfo equal_info;
equal_info.can_pullup_ = !is_null_side;
equal_info.mem_equal_ = true;
const uint64_t column_id = j + OB_APP_MIN_COLUMN_ID;
if (OB_ISNULL(select_expr)) {
ret = OB_ERR_UNEXPECTED;
@ -754,8 +755,9 @@ int ObTransformConstPropagate::collect_equal_pair_from_pullup(ObDMLStmt *stmt,
}
} else if (NULL == equal_info.const_expr_) {
// handle const info pull up
// case3: select * from (select c1 as a from t1 where c1 = 1) v, t2 where v.a = t2.c1; =>
// select * from (select c1 as a from t1 where c1 = 1) v, t2 where 1 = t2.c1;
// case3: select * from (select c1 as a from t1 where c1 = '1') v, t2 where v.a = t2.c1; =>
// select * from (select c1 as a from t1 where c1 = '1') v, t2 where '1' = t2.c1;
equal_info.mem_equal_ = false;
if (OB_FAIL(collect_from_pullup_const_infos(child_stmt, select_expr, equal_info))) {
LOG_WARN("failed to get expr from pullup const info", K(ret));
}
@ -1143,8 +1145,13 @@ int ObTransformConstPropagate::replace_internal(ObRawExpr *&cur_expr,
LOG_WARN("invalid expr", K(ret));
} else if (cur_expr != column_expr) {
// do nothing
} else if (expr_const_infos.at(i).mem_equal_) {
can_replace = true;
} else if (OB_FAIL(check_can_replace(cur_expr, parent_exprs, used_in_compare, can_replace))) {
LOG_WARN("failed to check can replace", K(ret));
}
if (OB_FAIL(ret)) {
} else if (!can_replace) {
// do nothing
} else if (OB_FAIL(check_need_cast_when_replace(cur_expr, parent_exprs, need_cast))) {