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From: Ron Johnson <ronljohnsonjr@gmail.com>
Date: Thu, 21 May 2026 13:50:21 -0400
Message-ID: 
 <CANzqJaDCAodT3Fkm3BX=7=KHBxcLuFdKpJeRJpFz3RoKsD541w@mail.gmail.com>
Subject: Re: Partitioning table - Update on partitioning key
To: Pgsql-admin <pgsql-admin@lists.postgresql.org>
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We'll need to see a "reproducer" (aka short bit of code that reproduces
your problem), with the output pasted here.

On Thu, May 21, 2026 at 12:12=E2=80=AFPM Raj <rajeshkumar.dba09@gmail.com> =
wrote:

> No, updating the partition key (say colum created_at)....when u update th=
e
> date , say change march to April,  this record is in new partition and we
> get this error
>
> On Thu, 21 May 2026, 17:12 Laurenz Albe, <laurenz.albe@cybertec.at> wrote=
:
>
>> On Thu, 2026-05-21 at 16:45 +0530, Raj wrote:
>> > Update happing on partition key.
>> >
>> > And we get error 'Tuple to be locked was already moved to another
>> partition due to concurrent update error..
>> >
>> > What's the best solution to handle it?
>>
>> Could you give us more context, like the exact statement and a descripti=
on
>> of the data it is operating on?
>>
>> If I had to guess, I would suspect that your UPDATE statement tries to
>> modify
>> the same row more than once.
>>
>> Yours,
>> Laurenz Albe
>>
>

--=20
Death to <Redacted>, and butter sauce.
Don't boil me, I'm still alive.
<Redacted> lobster!

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<div dir=3D"ltr"><div>We&#39;ll need to see a &quot;reproducer&quot; (aka s=
hort bit of code that reproduces your problem), with the output pasted here=
.</div><br><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr=
" class=3D"gmail_attr">On Thu, May 21, 2026 at 12:12=E2=80=AFPM Raj &lt;<a =
href=3D"mailto:rajeshkumar.dba09@gmail.com">rajeshkumar.dba09@gmail.com</a>=
&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px =
0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div=
 dir=3D"auto">No, updating the partition key (say colum created_at)....when=
 u update the date , say change march to April,=C2=A0 this record is in new=
 partition and we get this error</div><br><div class=3D"gmail_quote"><div d=
ir=3D"ltr" class=3D"gmail_attr">On Thu, 21 May 2026, 17:12 Laurenz Albe, &l=
t;<a href=3D"mailto:laurenz.albe@cybertec.at" target=3D"_blank">laurenz.alb=
e@cybertec.at</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddi=
ng-left:1ex">On Thu, 2026-05-21 at 16:45 +0530, Raj wrote:<br>
&gt; Update happing on partition key.<br>
&gt; <br>
&gt; And we get error &#39;Tuple to be locked was already moved to another =
partition due to concurrent update error..<br>
&gt; <br>
&gt; What&#39;s the best solution to handle it?<br>
<br>
Could you give us more context, like the exact statement and a description<=
br>
of the data it is operating on?<br>
<br>
If I had to guess, I would suspect that your UPDATE statement tries to modi=
fy<br>
the same row more than once.<br>
<br>
Yours,<br>
Laurenz Albe<br>
</blockquote></div>
</blockquote></div><div><br clear=3D"all"></div><div><br></div><span class=
=3D"gmail_signature_prefix">-- </span><br><div dir=3D"ltr" class=3D"gmail_s=
ignature"><div dir=3D"ltr">Death to &lt;Redacted&gt;, and butter sauce.<div=
>Don&#39;t boil me, I&#39;m still alive.<br><div><div>&lt;Redacted&gt; lobs=
ter!</div></div></div></div></div></div>

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