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MDEV-17493: Partition pruning doesn't work for nested outer joins

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Reuse the fix for MDEV-17518 here, too.
This commit is contained in:
Sergei Petrunia
2018-10-23 11:23:34 +02:00
parent 03680a9b4f
commit 3b6d903852
4 changed files with 120 additions and 61 deletions
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31
mysql-test/main/partition_pruning.test
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@ -1535,4 +1535,35 @@ select * from t1 where (a = 1 AND b < 'd' AND (c = 'b' OR (c = 'c' AND d = 1)) O
(a = 1 AND b >= 'a' AND (c = 'c' OR (c = 'd' AND d = 2))));
drop table t1;
--echo #
--echo # MDEV-17493: Partition pruning doesn't work for nested outer joins
--echo #
create table t0(a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (a int, b int, c int);
insert into t1 select a,a,a from t0;
create table t2 (a int, b int, c int);
insert into t2 select a,a,a from t0;
create table t3 (
part_id int,
a int
) partition by list (part_id) (
partition p0 values in (0),
partition p1 values in (1),
partition p2 values in (2),
partition p3 values in (3),
partition p4 values in (4)
);
insert into t3 select mod(a,5), a from t0;
explain partitions
select * from t1 left join t3 on (t1.a=t3.a and t3.part_id=3);
--echo # The following should have partitions="p3", NOT p0,p1,p2,p3,p4:
explain partitions
select * from t1 left join (t3 join t2) on (t1.a=t3.a and t3.a=t2.b and t3.part_id=3);
drop table t0,t1,t2,t3;