Hi!
On Mar 28, Homam S.A. wrote:
It seems that MySQL freaks out whenever it seems
something that looks like a derive table and refuses
it to cache. Even a non-UNION query like:
SELECT * FROM
(SELECT * FROM X WHERE A = 5) AS DerivedTable
Won't be cached.
It's a bug. Could you submit a
I have a query of the form:
(SELECT A, B from X ORDER BY A LIMIT 1000)
UNION ALL
(SELECT A, B from Y ORDER BY A LIMIT 1000)
ORDER BY A
I thought may be each query needs to start with
SELECT, so I wrapped the above query in a
derived-table expression like:
SELECT * FROM (
(SELECT A, B from X
It seems that MySQL freaks out whenever it seems
something that looks like a derive table and refuses
it to cache. Even a non-UNION query like:
SELECT * FROM
(SELECT * FROM X WHERE A = 5) AS DerivedTable
Won't be cached.
I read a comment in the documentation that if you put
SQL_CACHE in the
