Re: BUG #15283: Query Result equal 0 for partitioned table

From: suan tay <suan(dot)tay(at)gmail(dot)com>
To: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>
Cc: pgsql-bugs(at)lists(dot)postgresql(dot)org, PG Bug reporting form <noreply(at)postgresql(dot)org>
Subject: Re: BUG #15283: Query Result equal 0 for partitioned table
Date: 2018-07-23 08:04:08
Message-ID: CABsRQuxW1FFKk1czkmB5Q49PqQf+BM0zZsMx0i=bx1w3haeVcA@mail.gmail.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-bugs

Thank you for the clarification.

Yes in deed I'm using rules to do such partitioning in Posgresql 9.6.
I also test Postgres 10 with rules : the result of insertion is always at 0.

As you explain, it's throw that in the madder table isn't any insertion but
for the app the partitioning has to be completely transparent.

But I don't test CREATE TABLE with PARTITION BY clause . That may solve the
issue I have but I have to change all the app part because of the different
way to do PARTITIONING
I will do .

Many Thanks.
Regards.
ST

Le jeu. 19 juil. 2018 à 06:44, Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>
a écrit :

> On 2018/07/18 21:59, PG Bug reporting form wrote:
> > The following bug has been logged on the website:
> >
> > Bug reference: 15283
> > Logged by: Suan Tay
> > Email address: suan(dot)tay(at)gmail(dot)com
> > PostgreSQL version: 9.6.9
> > Operating system: Ubuntu 16,17
> > Description:
> >
> > Hello,
> > Result of data insertion is alway at 0 when the table is partitionned.
>
> What do you mean by "result is 0"? Is it "INSERT 0 0" that you're
> referring to?
>
> You reported this for 9.6.9 which doesn't have native partitioning. So,
> you may have set up a trigger on the parent table to redirect INSERT on it
> to INSERT into child tables / partitions. If that's so, then because of
> such a trigger, nothing would be actually inserted into the parent table,
> so the result is INSERT 0 0.
>
> > I use Sorm as JPA in my Java App, it cacht the result and as it's equal
> to 0
> > it send to Error.
> > I solved this issue with SimpleORM but it's not the reel issue.
> >
> > I also test the Postgresql 10.
>
> If you tried to use native partitioned table (CREATE TABLE with PARTITION
> BY clause) in Postgres 10, then this shouldn't happen. Inserts into
> parent are still redirected to child tables / partitions, but no triggers
> are involved, so the result shows the actual count of rows inserted. For
> example, if you insert 1 row into the partitioned table (parent), you will
> get INSERT 0 1 as a result.
>
> But if you didn't use native partitioned table, but used the same old
> method of using triggers as 9.6, you will see the same behavior as
> described above for 9.6.
>
> Thanks,
> Amit
>
>

In response to

Responses

Browse pgsql-bugs by date

  From Date Subject
Next Message Amit Langote 2018-07-23 08:19:14 Re: BUG #15283: Query Result equal 0 for partitioned table
Previous Message Victor Yegorov 2018-07-23 07:57:55 Re: BUG #15290: Stuck Parallel Index Scan query