Re: Unused indexes - PostgreSQL 9.2

On Tue, May 10, 2016 at 5:23 PM, Lucas Possamai <drum(dot)lucas(at)gmail(dot)com>
wrote:

>
>>>
>> >Some time ago I changed the pg_stat_temp directory from
>> /var/lib/pgsq/whatever to /tmp
>> Have you checked the postgres log to see if there are any errors about it
>> not being able to write to the pg_stat_temp dir?
>>
>>
> Yep.... no errors =\
>

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 } ';

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