Re: optimizing Postgres queries
От | David Teran |
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Тема | Re: optimizing Postgres queries |
Дата | |
Msg-id | 3796212E-3F79-11D8-A528-000A95A6F0DC@cluster9.com обсуждение исходный текст |
Ответ на | Re: optimizing Postgres queries (Shridhar Daithankar <shridhar_daithankar@myrealbox.com>) |
Ответы |
Re: optimizing Postgres queries
Re: optimizing Postgres queries |
Список | pgsql-performance |
Hi, > The performance will likely to be the same. Its just that integer > happens to > be default integer type and hence it does not need an explicit > typecast. ( I > don't remember exactly which integer is default but it is either of > int2,int4 > and int8...:-)) > The docs say int4 is much faster than int8, but i will check this. > The performance diffference is likely due to use of index, which is in > turn > due to typecasting. If you need bigint, you should use them. Just > remember to > typecast whenever required. This is my bigger problem: i am using EOF (OR mapping tool) which frees me more or less form writing a lot of SQL. If i need to typecast to use an index then i have to see how to do this with this framework. Regards David
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