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Re: Duplicate Index Creation

From: Samuel Stearns <SStearns(at)internode(dot)com(dot)au>
To: Raghavendra <raghavendra(dot)rao(at)enterprisedb(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "pgsql-admin(at)postgresql(dot)org"<pgsql-admin(at)postgresql(dot)org>
Subject: Re: Duplicate Index Creation
Date: 2012-07-03 07:18:11
Message-ID: CBAC86BE623FDB4E8B6225471691724291A2FBB8@EXCHMBX-ADL6-01.staff.internode.com.au (view raw or flat)
Thread:
Lists: pgsql-admin
Before and after analyze:

select schemaname,relid,indexrelid,relname,indexrelname from
pg_stat_all_indexes where relname='input_transaction_snbs';

schemaname |   relid   | indexrelid |        relname         |           indexrelname
------------+-----------+------------+------------------------+----------------------------------
snbs       | 535026046 |  616672654 | input_transaction_snbs | i1
snbs       | 535026046 |  616576519 | input_transaction_snbs | input_transaction_snbs_prod_pkey
(2 rows)

-------------------------------------------------------------------------------------------------------------------------------

SELECT idstat.schemaname AS schema_name,
       idstat.relname AS table_name,
       idstat.indexrelname AS index_name,
       idstat.idx_scan AS times_used,
       idstat.idx_scan AS times_used,
       pg_size_pretty(pg_relation_size(idstat.relid)) AS table_size,
       pg_relation_size(indexrelid) AS index_size,
       n_tup_upd + n_tup_ins + n_tup_del as num_writes
FROM pg_stat_user_indexes AS idstat
JOIN pg_indexes ON indexrelname = indexname
JOIN pg_stat_user_tables AS tabstat ON idstat.relid = tabstat.relid
WHERE idstat.relname = 'input_transaction_snbs'
AND indexdef !~* 'unique'
ORDER BY index_size desc;

schema_name |       table_name       | index_name | times_used | table_size | index_size | num_writes
-------------+------------------------+------------+------------+------------+------------+------------
snbs        | input_transaction_snbs | i1         |          0 | 2932 MB    |  304242688 |   10350357
snbs        | input_transaction_snbs | i1         |          0 | 2932 MB    |  304242688 |   10350357
(2 rows)

Sam


From: Raghavendra [mailto:raghavendra(dot)rao(at)enterprisedb(dot)com]
Sent: Tuesday, 3 July 2012 2:34 PM
To: Samuel Stearns
Cc: Tom Lane; pgsql-admin(at)postgresql(dot)org
Subject: Re: [ADMIN] Duplicate Index Creation

On Tue, Jul 3, 2012 at 10:19 AM, Raghavendra <raghavendra(dot)rao(at)enterprisedb(dot)com<mailto:raghavendra(dot)rao(at)enterprisedb(dot)com>> wrote:

On Tue, Jul 3, 2012 at 9:25 AM, Samuel Stearns <SStearns(at)internode(dot)com(dot)au<mailto:SStearns(at)internode(dot)com(dot)au>> wrote:
Results of \d (without all the column defs):

Indexes:
    "input_transaction_snbs_prod_pkey" PRIMARY KEY, btree (id)
    "i1" btree (trans_client)
Check constraints:
    "chk_charge" CHECK (charge_type IS NULL OR charge_type = 'Recurring'::text OR charge_type = 'Usage'::text OR charge_type = 'Fee'::text OR charge_type = 'Equipment'::text OR charge_type = 'One-t
ime'::text OR charge_type = 'Reversal'::text OR charge_type = 'Adjustment'::text)
Thanks. I was checking any INVALID indexes on the table. Its fine, can try below query.

select schemaname,relid,indexrelid,relname,indexrelname from pg_stat_all_indexes where relname='i1';

Also, try to ANALYZE the database and retry the queries. Its just to confirm that query results are getting from updated catalogs.

--Raghav


Opps... correction in my query WHERE clause, it should be pointing to relname not index -- >where relname=' input_transaction_snbs'   <--

--Raghav

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