From: | "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com> |
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To: | "Sebastian Hennebrueder" <usenet(at)laliluna(dot)de> |
Cc: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: PostgreSQL vs MySQL, and FreeBSD |
Date: | 2007-11-09 15:57:33 |
Message-ID: | dcc563d10711090757jeaa7ed2h962d79fe948fcad6@mail.gmail.com |
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Thread: | |
Lists: | pgsql-performance |
On Nov 9, 2007 9:41 AM, Sebastian Hennebrueder <usenet(at)laliluna(dot)de> wrote:
> If the queries are complex, this is understable. I had a performance
> review of a Hibernate project (Java Object Relation Mapping) using
> MySQL. ORM produces easily "complex" queries with joins and subqueries.
> MySQL uses nested loops for subqueries which lead to performance issues
> with growing database size.
>
> They state in their documentation that for version 5.2 there are
> improvements planned regarding this kind of query.
So, MySQL 5.2 will be catching up to version 7.1 or 7.2 of PostgreSQL
in that regard?
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