Re: how do I capture conflicting rows

On 2023-May-15, Nikhil Ingale wrote:

> Hi All,
>
> The following query inserts the rows by ignoring the rows that has
> conflicts.
>
> 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?

It sounds like you want a new feature:

INSERT INTO test (...) SELECT * FROM student
ON CONFLICT EXECUTE FUNCTION do_your_stuff(excluded);

Sounds like it could be useful, but somebody would have to design it
fully and implement it.

Or maybe just

INSERT INTO test (...) SELECT * FROM student
ON CONFLICT DO NOTHING RETURNING excluded.*;

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