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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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5
sql/sql_priv.h
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@ -316,7 +316,10 @@
*/
/* This subquery has fields from outer query (put by user) */
#define UNCACHEABLE_DEPENDENT_GENERATED 1
/* This subquery contains functions with random result */
/*
This subquery contains functions with random result.
Something that is uncacheable is by default unmergeable.
*/
#define UNCACHEABLE_RAND 2
/* This subquery contains functions with side effect */
#define UNCACHEABLE_SIDEEFFECT 4