Re: query reboot pgsql 9.5.1
От | Melvin Davidson |
---|---|
Тема | Re: query reboot pgsql 9.5.1 |
Дата | |
Msg-id | CANu8Fiy=8yThGY6xoFuS+z00VFzVT7GFLVU+U+30drEugOYkvg@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: query reboot pgsql 9.5.1 (Felipe de Jesús Molina Bravo <fjmolinabravo@gmail.com>) |
Ответы |
Re: query reboot pgsql 9.5.1
|
Список | pgsql-general |
On Fri, Mar 4, 2016 at 3:52 PM, Felipe de Jesús Molina Bravo <fjmolinabravo@gmail.com> wrote:
The above are exactly the same, so if they are indeed from the different versions I do not see an issue. The question to ask here is whether the above are actually from the different Postgres instances?
Now i execute the same in pgsql 9.4.5 and all is fine!!!
The EXPLAINs are:
- pgsql 9.5.1:
Nested Loop Left Join (cost=0.03..492944.81 rows=276095 width=4)
-> Seq Scan on _gc_tb a (cost=0.00..3321.30 rows=120130 width=66)
-> Bitmap Heap Scan on _gc_cat b (cost=0.03..4.06 rows=2 width=70)
Recheck Cond: ((arama <@ a.arama) AND (a.arama <@ arama))
-> Bitmap Index Scan on _gc_cat_arama_gin
(cost=0.00..0.03 rows=2 width=0)
Index Cond: ((arama <@ a.arama) AND
(a.arama <@ arama))
- pgsql 9.4.5:
Nested Loop Left Join (cost=0.03..492944.81 rows=276095 width=4)
-> Seq Scan on _gc_tb a (cost=0.00..3321.30 rows=120130 width=66)
-> Bitmap Heap Scan on _gc_cat b (cost=0.03..4.06 rows=2 width=70)
Recheck Cond: ((arama <@ a.arama) AND (a.arama <@ arama))
-> Bitmap Index Scan on _gc_cat_arama_gin
(cost=0.00..0.03 rows=2 width=0)
Index Cond: ((arama <@ a.arama) AND
(a.arama <@ arama))yes these are differentsSo is each Postgres instance running in a separate container and if so are they set up the same?Yes, is the same configuration!!
I suspect your 9.5.1 database has not been analyzed yet and therefore the statistics are off.
Do the following in the 9.5.1 database and then retry your query.
ANALYZE VERBOSE public._gc_cat;
ANALYZE VERBOSE public._gc_tb;
--
Melvin Davidson
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.

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