Re: Unused indexes - PostgreSQL 9.2

[Melvin Davidson <melvin6925@xxxxxxxxx>]

My bad,  WHERE indexrelname = ' {YOUR INDEX NAME } ';

If you put the name of your index, you should get back stats for it. What are those stats?

On Tue, May 10, 2016 at 5:47 PM, Lucas Possamai <drum.lucas@xxxxxxxxx> wrote:

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

--

Melvin Davidson
I reserve the right to fantasize.  Whether or not you
wish to share my fantasy is entirely up to you.