Re: Table partitioning with sequence field in postgresql12

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От Srinivasa T N
Тема Re: Table partitioning with sequence field in postgresql12
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Msg-id CAFruNddSbJG_BZd6Zc1TVHNnn_5ViFAnXWpAd0jD2PzXWP-73A@mail.gmail.com
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Ответ на Re: Table partitioning with sequence field in postgresql12  (amul sul <sulamul@gmail.com>)
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I am using declarative partitioning on some other field of the same table in which gid also exists.

Regards,
Seenu.


On Thu, Jun 18, 2020 at 12:31 PM amul sul <sulamul@gmail.com> wrote:
On Thu, Jun 18, 2020 at 12:22 PM Srinivasa T N <seenutn@gmail.com> wrote:
>
> Hi,
>    I have a parent table with one of the field as ""gid" int4 DEFAULT nextval('"ami_smart_new".aoi_boundary_gid_seq'::regclass)".
>
>    I create child tables which inherit parent and use hash partition.  When I directly insert into child tables, will there be any race condition causing two child tables getting the same sequence value for gid?
>
if "gid" is the partitioning key and assuming you are using declarative
partitioning[1], then it won't be possible to have the same "gid" value in two
child partitions.

1] https://www.postgresql.org/docs/current/ddl-partitioning.html

regards,
Amul

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