Обсуждение: How to use EXPLAIN (TIMING)
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
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