Re: cache queries

2005-08-11 Thread Gleb Paharenko
time. "Paco Martinez Rodriguez" <[EMAIL PROTECTED]> wrote: > Hi.. > > I'm using "cache queries" with MySQL 4.0.13 during three days and I get > a little better speed. > > Value of Query_cache_size =3D 20 Mb. > > I have two questions.=2

Re: cache queries

2005-08-11 Thread Nuno Pereira
Paco Martinez Rodriguez wrote: Hi.. I'm using "cache queries" with MySQL 4.0.13 during three days and I get a little better speed. Value of Query_cache_size = 20 Mb. This is 20 Mega Bits. I suppose you meant to mean 20 MegaBytes (20MB), or even 20 Mibibytes (20MiB). I hav

cache queries

2005-08-11 Thread Paco Martinez Rodriguez
Hi.. I'm using "cache queries" with MySQL 4.0.13 during three days and I get a little better speed. Value of Query_cache_size = 20 Mb. I have two questions. 1.- Is there any way to see which queries are being stored ?? 2.- How can I delay "qcache_lowmen_pruenes" ??

Re: Why doesn't MySQL cache queries that start with parenthesis? (further info)

2005-03-29 Thread Sergei Golubchik
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 su

Why doesn't MySQL cache queries that start with parenthesis? (further info)

2005-03-28 Thread Homam S.A.
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 SEL

Why doesn't MySQL cache queries that start with parenthesis?

2005-03-28 Thread Homam S.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 ORDE

Re: Why MySQL doesn't cache queries that populate temp tables?

2005-02-14 Thread Gleb Paharenko
Hello. As said at: http://dev.mysql.com/doc/mysql/en/query-cache-how.html A query will not be cached, if it uses TEMPORARY tables. "Homam S.A." <[EMAIL PROTECTED]> wrote: > Why MySQL insists on ignoring the query cache whenever > I use the same query repeatedly to populate a temp

Why MySQL doesn't cache queries that populate temp tables?

2005-02-11 Thread Homam S.A.
Why MySQL insists on ignoring the query cache whenever I use the same query repeatedly to populate a temp table? So I have: create temporary table MyTable select SQL_CACHE * from SomeTable WHERE (A bunch of criteria) limit 1000; SomeTable is a read-only table. If I issue the query without the t