How to use EXPLAIN (TIMING)

Started by Robins Tharakanalmost 13 years ago2 messages
#1Robins Tharakan
tharakan@gmail.com

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

#2Andres Freund
andres@2ndquadrant.com
In reply to: Robins Tharakan (#1)
Re: How to use EXPLAIN (TIMING)

On 2013-04-12 20:44:02 +0530, Robins Tharakan wrote:

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?

EXPLAIN (ANALYZE, TIMING on/off) ...;

Greetings,

Andres Freund

--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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