On Fri, 2007-11-09 at 16:41 +0100, Sebastian Hennebrueder 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.
Even for Postgresql, nested loops are still evil and hampers
performance.