database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-09-02 09:41:40 +03:00
Code Activity

Fixed a bug that caused crashes for SHOW CREATE VIEW <view> when <view> was recursive. Added a test case to check the fix.

Browse Source
This commit is contained in:
Galina Shalygina
2016-05-14 23:33:50 +03:00
parent d9b332bd20
commit 3b47632bfc
4 changed files with 72 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
mysql-test/r/cte_recursive.result
View File

@@ -239,15 +239,15 @@ as
(
select *
from folks
where name = 'Vasya' and dob = '2000-01-01'
where name = 'Vasya'
union
select p.*
from folks as p, ancestors AS a
where p.id = a.father
from folks as p, ancestors as fa
where p.id = fa.father
union
select p.*
from folks as p, ancestors AS a
where p.id = a.mother
from folks as p, ancestors as ma
where p.id = ma.mother
)
select * from ancestors;
id name dob father mother
@@ -346,7 +346,37 @@ id name dob father mother
9 Grandma Ann 1941-10-15 NULL NULL
8 Grandma Sally 1943-08-23 5 6
6 Grandgrandma Martha 1923-05-17 NULL NULL
drop view v1;
create view v2 as
with recursive
ancestors
as
(
select *
from folks
where name = 'Vasya'
union
select p.*
from folks as p, ancestors as fa
where p.id = fa.father
union
select p.*
from folks as p, ancestors as ma
where p.id = ma.mother
)
select * from ancestors;
show create view v2;
View Create View character_set_client collation_connection
v2 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v2` AS with recursive ancestors as (select `folks`.`id` AS `id`,`folks`.`name` AS `name`,`folks`.`dob` AS `dob`,`folks`.`father` AS `father`,`folks`.`mother` AS `mother` from `folks` where (`folks`.`name` = 'Vasya') union select `p`.`id` AS `id`,`p`.`name` AS `name`,`p`.`dob` AS `dob`,`p`.`father` AS `father`,`p`.`mother` AS `mother` from (`folks` `p` join `ancestors` `fa`) where (`p`.`id` = `fa`.`father`) union select `p`.`id` AS `id`,`p`.`name` AS `name`,`p`.`dob` AS `dob`,`p`.`father` AS `father`,`p`.`mother` AS `mother` from (`folks` `p` join `ancestors` `ma`) where (`p`.`id` = `ma`.`mother`))select `ancestors`.`id` AS `id`,`ancestors`.`name` AS `name`,`ancestors`.`dob` AS `dob`,`ancestors`.`father` AS `father`,`ancestors`.`mother` AS `mother` from `ancestors` latin1 latin1_swedish_ci
select * from v2;
id name dob father mother
100 Vasya 2000-01-01 20 30
20 Dad 1970-02-02 10 9
30 Mom 1975-03-03 8 7
9 Grandma Ann 1941-10-15 NULL NULL
10 Grandpa Bill 1940-04-05 NULL NULL
8 Grandma Sally 1943-08-23 5 6
6 Grandgrandma Martha 1923-05-17 NULL NULL
drop view v1,v2;
explain extended
with recursive
ancestors