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Merge 10.5 into 10.6

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Marko Mäkelä
2023-01-10 13:54:17 +02:00
parent 12a85c6caf 17858e03a7
commit 56c9b0bca0
20 changed files with 183 additions and 22 deletions
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sql/opt_sum.cc
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@@ -438,7 +438,7 @@ int opt_sum_query(THD *thd,
The optimization is not applicable in both cases:
(a) 'expr' is a non-constant expression. Then we can't
replace 'expr' by a constant.
(b) 'expr' is a costant. According to ANSI, MIN/MAX must return
(b) 'expr' is a constant. According to ANSI, MIN/MAX must return
NULL if the query does not return any rows. Thus, if we are not
able to determine if the query returns any rows, we can't apply
the optimization and replace MIN/MAX with a constant.