"Ezequias Rodrigues da Rocha" <ezequias(dot)rocha(at)gmail(dot)com> writes:
> The selection takes less than 1 second but on delete I wait more than 4
> minutes and notthing. Can someone tell me what could happen ?
Perhaps foreign keys referencing this table and no indexes on the
referencing columns? You're not required to have an index on the
referencing side, but you pay for it when you update or delete in
the master table...
regards, tom lane