Re: Very slow queries

What indexes do those tables have?  Any?

Sidar López Cruz wrote:
> Check this:
>
> query: Delete From ceroriesgo.salarios Where numero_patrono Not In
> (Select numero_patrono From ceroriesgo.patronos)
>
> Seq Scan on salarios  (cost=51021.78..298803854359.95 rows=14240077
> width=6)
>  Filter: (NOT (subplan))
>  SubPlan
>    ->  Materialize  (cost=51021.78..69422.58 rows=1032980 width=25)
>          ->  Seq Scan on patronos  (cost=0.00..41917.80 rows=1032980
> width=25)
>
>
> These query took a day to finish, how or who can improove better
> performance of my PostgreSQL.
>
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*Edward Allen*
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