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fix core at ob_stmt_comparer

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This commit is contained in:
xianyu-w
2023-07-27 04:18:33 +00:00
committed by ob-robot
parent 8d02ac1fc8
commit 1410081a1d
2 changed files with 24 additions and 31 deletions
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31
src/sql/rewrite/ob_stmt_comparer.cpp
View File

@ -35,6 +35,7 @@ void ObStmtMapInfo::reset()
is_group_equal_ = false;
having_map_.reset();
is_having_equal_ = false;
is_order_equal_ = false;
select_item_map_.reset();
is_select_item_equal_ = false;
is_distinct_equal_ = false;
@ -70,6 +71,7 @@ int ObStmtMapInfo::assign(const ObStmtMapInfo& other)
is_cond_equal_ = other.is_cond_equal_;
is_group_equal_ = other.is_group_equal_;
is_having_equal_ = other.is_having_equal_;
is_order_equal_ = other.is_order_equal_;
is_select_item_equal_ = other.is_select_item_equal_;
is_distinct_equal_ = other.is_distinct_equal_;
}
@ -602,12 +604,13 @@ int ObStmtComparer::check_stmt_containment(const ObDMLStmt *first,
second_count = second->get_order_item_size();
if (0 == first_count && 0 == second_count) {
map_info.is_order_equal_ = true;
} else if (first_count != second_count) {
// do nothing
} else if (OB_FAIL(compute_orderby_map(first_sel,
second_sel,
first_sel->get_order_items(),
second_sel->get_order_items(),
map_info,
map_info.order_map_,
match_count))) {
LOG_WARN("failed to compute order item map", K(ret));
} else if (match_count == first_count && match_count == second_count) {
@ -766,42 +769,31 @@ int ObStmtComparer::compute_orderby_map(const ObDMLStmt *first,
const ObIArray<OrderItem> &first_orders,
const ObIArray<OrderItem> &second_orders,
ObStmtMapInfo &map_info,
ObIArray<int64_t> &order_map,
int64_t &match_count)
{
int ret = OB_SUCCESS;
ObSqlBitSet<> matched_items;
ObStmtCompareContext context(first, second, map_info, &first->get_query_ctx()->calculable_items_);
match_count = 0;
bool first_match_all = true;
if (OB_ISNULL(first) || OB_ISNULL(second) || OB_ISNULL(first->get_query_ctx())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(first), K(second), K(ret));
} else if (OB_FAIL(order_map.prepare_allocate(first_orders.count()))) {
LOG_WARN("failed to preallocate array", K(ret));
} else {
for (int64_t i = 0; OB_SUCC(ret) && i < first_orders.count(); ++i) {
for (int64_t i = 0; OB_SUCC(ret) && first_match_all && i < first_orders.count() && i < second_orders.count(); ++i) {
bool is_match = false;
order_map.at(i) = OB_INVALID_ID;
for (int64_t j = 0; OB_SUCC(ret) && !is_match && j < second_orders.count(); ++j) {
if (matched_items.has_member(j)) {
// do nothing
} else if (first_orders.at(i).order_type_ != second_orders.at(i).order_type_) {
// do nothing
if (first_orders.at(i).order_type_ != second_orders.at(i).order_type_) {
first_match_all = false;
} else if (OB_FAIL(is_same_condition(first_orders.at(i).expr_,
second_orders.at(j).expr_,
second_orders.at(i).expr_,
context,
is_match))) {
LOG_WARN("failed to check is condition equal", K(ret));
} else if (!is_match) {
// do nothing
first_match_all = false;
} else if (OB_FAIL(append(map_info.equal_param_map_, context.equal_param_info_))) {
LOG_WARN("failed to append exprs", K(ret));
} else if (OB_FAIL(matched_items.add_member(j))) {
LOG_WARN("failed to add member", K(ret));
} else {
match_count++;
order_map.at(i) = j;
}
}
}
}
@ -1304,12 +1296,13 @@ int ObStmtComparer::compare_set_stmt(const ObSelectStmt *first,
int64_t match_count = 0;
if (0 == first_count && 0 == second_count) {
map_info.is_order_equal_ = true;
} else if (first_count != second_count) {
// do nothing
} else if (OB_FAIL(compute_orderby_map(first,
second,
first->get_order_items(),
second->get_order_items(),
map_info,
map_info.order_map_,
match_count))) {
LOG_WARN("failed to compute order item map", K(ret));
} else if (match_count == first_count && match_count == second_count) {

6
src/sql/rewrite/ob_stmt_comparer.h
View File

@ -43,7 +43,6 @@ enum QueryRelation
common::ObSEArray<int64_t, 4> cond_map_;
common::ObSEArray<int64_t, 4> group_map_;
common::ObSEArray<int64_t, 4> having_map_;
common::ObSEArray<int64_t, 4> order_map_;
common::ObSEArray<int64_t, 4> select_item_map_;
bool is_table_equal_;
bool is_from_equal_;
@ -80,7 +79,9 @@ enum QueryRelation
K_(having_map),
K_(select_item_map),
K_(equal_param_map),
K_(view_select_item_map));
K_(view_select_item_map),
K_(is_order_equal),
K_(is_distinct_equal));
};
struct StmtCompareHelper {
@ -236,7 +237,6 @@ public:
const ObIArray<OrderItem> &first_orders,
const ObIArray<OrderItem> &second_orders,
ObStmtMapInfo &map_info,
ObIArray<int64_t> &order_map,
int64_t &match_count);
static int compute_from_items_map(const ObDMLStmt *first,