From: | Robins Tharakan <tharakan(at)gmail(dot)com> |
---|---|
To: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
Subject: | How to use EXPLAIN (TIMING) |
Date: | 2013-04-12 15:14:02 |
Message-ID: | CAEP4nAzWMzZ08Bzo4078VREXmEp0zP2f0xjP-pB1vb4XZtE3Uw@mail.gmail.com |
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Hi,
While creating regression tests for EXPLAIN I am (somehow) unable to get
(TIMING) option to work with EXPLAIN!
I must be doing something stupid but all these options below just didn't
work. Could someone point me to the right direction?
mpf2=# explain (TIMING) SELECT 1;
ERROR: EXPLAIN option TIMING requires ANALYZE
mpf2=# EXPLAIN (TIMING FALSE) SELECT 1;
QUERY PLAN
------------------------------------------
Result (cost=0.00..0.01 rows=1 width=0)
(1 row)
mpf2=# EXPLAIN ANALYSE (TIMING) SELECT 1;
ERROR: syntax error at or near "TIMING"
LINE 1: EXPLAIN ANALYSE (TIMING) SELECT 1;
^
mpf2=# EXPLAIN ANALYSE (TIMING TRUE) SELECT 1;
ERROR: syntax error at or near "TIMING"
LINE 1: EXPLAIN ANALYSE (TIMING TRUE) SELECT 1;
^
mpf2=# EXPLAIN ANALYSE TIMING TRUE SELECT 1;
ERROR: syntax error at or near "TIMING"
LINE 1: EXPLAIN ANALYSE TIMING TRUE SELECT 1;
^
mpf2=# EXPLAIN ANALYSE TIMING SELECT 1;
ERROR: syntax error at or near "TIMING"
LINE 1: EXPLAIN ANALYSE TIMING SELECT 1;
^
mpf2=# EXPLAIN TIMING ANALYSE SELECT 1;
ERROR: syntax error at or near "TIMING"
LINE 1: EXPLAIN TIMING ANALYSE SELECT 1;
^
mpf2=# EXPLAIN (TIMING) ANALYSE SELECT 1;
ERROR: syntax error at or near "ANALYSE"
LINE 1: EXPLAIN (TIMING) ANALYSE SELECT 1;
^
mpf2=# EXPLAIN (TIMING) ANALYZE SELECT 1;
ERROR: syntax error at or near "ANALYZE"
LINE 1: EXPLAIN (TIMING) ANALYZE SELECT 1;
^
mpf2=# EXPLAIN (TIMING FALSE) ANALYZE SELECT 1;
ERROR: syntax error at or near "ANALYZE"
LINE 1: EXPLAIN (TIMING FALSE) ANALYZE SELECT 1;
^
mpf2=# SELECT version();
version
--------------------------------------------------------------------------------
------------------------------
PostgreSQL 9.2.3 on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.4.6
20120
305 (Red Hat 4.4.6-4), 64-bit
(1 row)
Thanks
--
Robins Tharakan
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