Sorry for the misunderstanding.
I have a table like;
CREATE TABLE zamazin
(
paramuser_id text,
paramperson_id integer,
paramdata json,
paramisdeleted boolean,
paramactiontime timestamp without time zone
)
paramdata row size is 110KB and over.
When I execute this query like;
*select * from zamazin*
it takes *600 seconds*.
But when analyze the query ;
*"Seq Scan on public.zamazin (cost=0.00..21.77 rows=1077 width=49) (actual
time=0.008..0.151 rows=1077 loops=1)"" Output: paramuser_id,
paramperson_id, paramdata, paramisdeleted, paramactiontime"" Buffers:
shared hit=11""Planning time: 0.032 ms""Execution time: 0.236 ms"*
Why the query takes a long time, I do not understand. I assume that this
relates to the TOAST structure.
png.png
(11K)
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Andreas Joseph Krogh <andreas(at)visena(dot)com>, 7 Şub 2020 Cum, 16:12 tarihinde
şunu yazdı:
> På fredag 07. februar 2020 kl. 14:07:28, skrev Asya Nevra Buyuksoy <
> ayisan1096(at)gmail(dot)com>:
>
> Hello everybody,
>
> [...]
>
> How I can achieve good performance?
>
>
> Nobody here understands anything unless you show the exact query and
> schema...
>
> And of course you'll be encurraged to upgrade to latest version (12.1) as
> 9.4.1 is now 5 years old..
>
> --
> Andreas Joseph Krogh
>
