From: | Lucas Possamai <drum(dot)lucas(at)gmail(dot)com> |
---|---|
To: | Melvin Davidson <melvin6925(at)gmail(dot)com> |
Cc: | Postgres General <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: Unused indexes - PostgreSQL 9.2 |
Date: | 2016-05-10 21:47:06 |
Message-ID: | CAE_gQfXKWD8ao3mubJzdq1KcFnNCsPAGj+6+ocR1ZzPB4Udbxg@mail.gmail.com |
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Lists: | pgsql-general |
>
>
> And what happens if you run this query?
>
> SELECT idstat.schemaname AS schema,
> idstat.relname AS table_name,
> indexrelname AS index_name,
> idstat.idx_scan AS times_used,
> pg_size_pretty(pg_relation_size(quote_ident(idstat.schemaname) ||
> '.' || quote_ident(idstat.relname))) AS table_size,
> pg_size_pretty(pg_relation_size(quote_ident(idstat.schemaname) ||
> '.' || quote_ident(indexrelname))) AS index_size,
> n_tup_upd + n_tup_ins + n_tup_del as num_writes,
> indexdef AS definition
> FROM pg_stat_user_indexes AS idstat
> JOIN pg_indexes ON indexrelname = indexname
> JOIN pg_stat_user_tables AS tabstat ON idstat.relname = tabstat.relname
> WHERE indexrelname = ' {YOUR QUERY NAME } ';
>
>
Sorry.. not sure what I should put into the WHERE clause ..
But, taking off the WHERE it returns me 600 rows
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