From: | Rui DeSousa <rui(at)crazybean(dot)net> |
---|---|
To: | Nikhil Ingale <niks(dot)bgm(at)gmail(dot)com> |
Cc: | pgsql-admin(at)lists(dot)postgresql(dot)org |
Subject: | Re: how do I capture conflicting rows |
Date: | 2023-05-15 14:53:03 |
Message-ID: | 6D26434B-74A9-43FF-B593-07DAD0BBFD9E@crazybean.net |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-admin |
> On May 15, 2023, at 1:32 AM, Nikhil Ingale <niks(dot)bgm(at)gmail(dot)com> wrote:
>
> INSERT INTO test (id,name,age,branch) SELECT * FROM student ON CONFLICT DO NOTHING;
>
> How do I capture the conflicting records to a file while non conflicting records are inserted to the table?
>
You can return the rows inserted and from that you can determine which rows had conflicts by returning the inserted rows.
with x (id, name, age, branch) as (
select id, name, age, branch
from student
), insrt (id) as (
insert into test (id,name,age,branch)
select id, name, age, branch from x
on conflict do nothing
returning id
)
select x.*
from x
left out join insrt on insrt.id = x.id
where insrt.id is null
;
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