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MDEV-32583 UUID() should be treated as stochastic for the purposes of forcing query materialization

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RAND() and UUID() are treated differently with respect to subquery
materialization both should be marked as uncacheable, forcing materialization.
Altered Create_func_uuid(_short)::create_builder().
Added comment in header about UNCACHEABLE_RAND meaning also unmergeable.
This commit is contained in:
Rex
2024-03-19 08:50:19 +12:00
parent 5979dcf95b
commit 9e800eda86
5 changed files with 43 additions and 3 deletions
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15
mysql-test/main/func_misc.test
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@ -1361,3 +1361,18 @@ FROM information_schema.metadata_lock_info WHERE thread_id>0 ORDER BY TABLE_SCHE
--enable_ps2_protocol
--enable_view_protocol
--echo #
--echo # MDEV-32583 UUID() should be treated as stochastic for the purposes of
--echo # forcing query materialization
--echo #
--source include/have_sequence.inc
create table t1 as WITH cte AS (SELECT UUID() as r FROM seq_1_to_10)
SELECT r as r1, r FROM cte;
select count(*) from t1 where r1!=r;
drop table t1;
--echo #
--echo # End of 10.5 tests
--echo #