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MDEV-23619: Merge 10.4 into 10.5

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This commit is contained in:
Marko Mäkelä
2020-11-13 21:54:32 +02:00
parent d7a5824899 b63dc3f370
commit ca331bdcda
5 changed files with 317 additions and 26 deletions
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50
mysql-test/main/cte_recursive.test
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@ -2675,6 +2675,56 @@ SELECT * FROM t4;
DROP PROCEDURE p;
DROP TABLE t1,t2,t3,t4;
--echo #
--echo # MDEV-23619: recursive CTE used only in the second operand of UNION
--echo #
create table t1 (
a bigint(10) not null auto_increment,
b int(5) not null,
c bigint(10) default null,
primary key (a)
) engine myisam;
insert into t1 values
(1,3,12), (2,7,15), (3,1,3), (4,3,1);
let $q=
with recursive r_cte as
( select * from t1 as s
union
select t1.* from t1, r_cte as r where t1.c = r.a )
select 0 as b FROM dual union all select b FROM r_cte as t;
eval explain $q;
eval $q;
--source include/analyze-format.inc
eval analyze format=json $q;
eval prepare stmt from "$q";
execute stmt;
execute stmt;
deallocate prepare stmt;
--echo #checking hanging cte that uses a recursive cte
let $q1=
with h_cte as
( with recursive r_cte as
( select * from t1 as s
union
select t1.* from t1, r_cte as r where t1.c = r.a )
select 0 as b FROM dual union all select b FROM r_cte as t)
select * from t1 as tt;
eval explain $q1;
eval $q1;
--source include/analyze-format.inc
eval analyze format=json $q1;
eval prepare stmt from "$q1";
execute stmt;
execute stmt;
deallocate prepare stmt;
drop table t1;
--echo #
--echo # End of 10.2 tests
--echo #