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MDEV-6892: WHERE does not apply

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Taking into account implicit dependence of constant view field from nullable table of left join added.

Fixed finding real table to check if it turned to NULL (materialized view & derived taken into account)

Removed incorrect uninitialization.
This commit is contained in:
Oleksandr Byelkin
2015-04-14 23:18:54 +02:00
parent 8cbaafd22b
commit 20109712ae
5 changed files with 83 additions and 35 deletions
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14
mysql-test/t/derived.test
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@ -492,5 +492,17 @@ update t1 set balance=(select sum(balance) from (SELECT balance FROM t1 where ac
set optimizer_switch=@save_derived_optimizer_switch_bug;
drop table t1;
set optimizer_switch=@save_derived_optimizer_switch;
--echo #
--echo # MDEV-6892: WHERE does not apply
--echo #
create table t1 (id int);
create table t2 (id int);
insert into t1 values(1),(2),(3);
insert into t2 values(4),(5),(6);
#explain extended
select x.id, message from (select id from t1) x left join
(select id, 1 as message from t2) y on x.id=y.id
where coalesce(message,0) <> 0;
drop table t1,t2;