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| author | Igor Babaev <igor@askmonty.org> | 2021-07-08 17:47:17 -0700 |
|---|---|---|
| committer | Igor Babaev <igor@askmonty.org> | 2021-07-08 17:47:17 -0700 |
| commit | 78735dcaf757cd71c8f0ff3d21071b0f89018150 (patch) | |
| tree | ae009d5bf0a890aa89d881b47acab11593da47ed /mysql-test/main/cte_nonrecursive.result | |
| parent | e56fe393104960eb62043c3777ce7d21de9362f4 (diff) | |
| download | mariadb-git-78735dcaf757cd71c8f0ff3d21071b0f89018150.tar.gz | |
MDEV-26108 Crash with query referencing twice CTE that uses embedded recursive CTE
This bug could affect queries that had at least two references to a CTE that
used an embedded recursive CTE.
Starting from version 10.4 some code in With_element::clone_parsed_spec()
that assumed a certain order of selects after parsing the specification of
a CTE became not valid anymore. It could lead to global select lists where
some selects were missing. If a missing CTE happened to belong to the
recursive part of a recursive CTE some recursive table references were not
set as references to materialized derived tables and this caused a crash of
the server.
Approved by Oleksandr Byelkin <sanja@mariadb.com>
Diffstat (limited to 'mysql-test/main/cte_nonrecursive.result')
| -rw-r--r-- | mysql-test/main/cte_nonrecursive.result | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mysql-test/main/cte_nonrecursive.result b/mysql-test/main/cte_nonrecursive.result index 040afdf7ff4..4cd466ac350 100644 --- a/mysql-test/main/cte_nonrecursive.result +++ b/mysql-test/main/cte_nonrecursive.result @@ -1126,7 +1126,7 @@ NULL UNION RESULT <union4,5> ALL NULL NULL NULL NULL NULL NULL NULL UNION RESULT <union11,12> ALL NULL NULL NULL NULL NULL NULL NULL UNION RESULT <union1,6> ALL NULL NULL NULL NULL NULL NULL Warnings: -Note 1003 with cte_e as (with cte_o as (with cte_i as (select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` < 7)select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` > 1)select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` < 3 and `test`.`t1`.`a` > 1 and `test`.`t1`.`a` < 7 and `test`.`t1`.`a` > 1 union select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` > 4 and `test`.`t1`.`a` > 1 and `test`.`t1`.`a` < 7 and `test`.`t1`.`a` > 1)select `cte_e1`.`a` AS `a` from `cte_e` `cte_e1` where `cte_e1`.`a` > 1 union select `cte_e2`.`a` AS `a` from `cte_e` `cte_e2` +Note 1003 with cte_e as (with cte_o as (with cte_i as (/* select#2 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` < 7)/* select#3 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` > 1)/* select#4 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` < 3 and `test`.`t1`.`a` > 1 and `test`.`t1`.`a` < 7 and `test`.`t1`.`a` > 1 union /* select#5 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` > 4 and `test`.`t1`.`a` > 1 and `test`.`t1`.`a` < 7 and `test`.`t1`.`a` > 1)/* select#1 */ select `cte_e1`.`a` AS `a` from `cte_e` `cte_e1` where `cte_e1`.`a` > 1 union /* select#6 */ select `cte_e2`.`a` AS `a` from `cte_e` `cte_e2` drop table t1; # # MDEV-13753: embedded CTE in a VIEW created in prepared statement |