Explain Analyze mode

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От Ioannis Theoharis
Тема Explain Analyze mode
Дата
Msg-id Pine.GSO.4.58.0503111614490.18547@ourania.ics.forth.gr
обсуждение исходный текст
Ответы Re: Explain Analyze mode  (Oleg Bartunov <oleg@sai.msu.su>)
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Hi, i found this form of output of explain analyze, watching some old
mails in lists.

test4=# explain analyze select * from patients;
LOG:  query: explain analyze select * from patients;
LOG:  duration: 0.603887 sec
LOG:  QUERY STATISTICS
! system usage stats:
!       0.624269 elapsed 0.458985 user 0.123047 system sec
!       [0.468750 user 0.125000 sys total]
!       0/0 [0/0] filesystem blocks in/out
!       7/4 [310/158] page faults/reclaims, 0 [0] swaps
!       0 [0] signals rcvd, 0/0 [0/0] messages rcvd/sent
!       0/0 [0/0] voluntary/involuntary context switches
! buffer usage stats:
!       Shared blocks:       2742 read,          0 written, buffer hit
rate = 3.59%
!       Local  blocks:          0 read,          0 written, buffer hit
rate = 0.00%
!       Direct blocks:          0 read,          0 written                                                  QUERY PLAN
-----------------------------------------------------------------Seq Scan on patients  (cost=0.00..4048.60 rows=131960
width=172)
(actual time=0.04..562.97 rows=133886 loops=1)Total runtime: 602.42 msec
(2 rows)


How can i turn my configuration to achieve this output for explain
analyze (and only the QUERY PLAN, as like tomorrow)?



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