Re: Transactions and ID's generated by triggers

Using pl/pgsql you can:
....
DECLARE idordinal type;
BEGIN
INSERT INTO tdir_uris_files RETURNING id_ordinal INTO idordinal;
INSERT INTO tdir_uris_files_details (id_ordinal) VALUES (idordinal);
END;
....

Similar results are possible in other environments. If you do not have access to "RETURNING" for some reason you can issue a select - assuming you can identify the record in tdir_uris_files that you need.

David J.

-----Original Message-----
From: pgsql-general-owner(at)postgresql(dot)org [mailto:pgsql-general-owner(at)postgresql(dot)org] On Behalf Of Andre Lopes
Sent: Sunday, February 27, 2011 3:34 PM
To: postgresql Forums
Subject: [GENERAL] Transactions and ID's generated by triggers

Hi,

I have a situation that I dont know how to deal.

I have 2 tables "tdir_uris_files" and "tdir_uri_files_details". Please see the Image in attach.

The table "tdir_uris_files" have the field "id_ordinal" that is originated by a trigger(before insert) The table "tdir_uri_files_details" use the field "id_ordinal"
generated by trigger on the insert on the table "tdir_uris_files"

Now my doubt. It is possible to do a transaction to this two tables at the same time?

How can I know the value of the field "id_ordinal" that was generated by the trigger?

Can I be able to do this?

[code]
BEGIN;
INSERT INTO tdir_uris_files (uri, id_language, id_category, id_file_context, id_encode_format, n_file, file) values (...) INSERT INTO tdir_uri_files_details (uri, id_language, id_category, id_file_context, id_ordinal, id_file_type, id_file_detail, value) values (...); COMMIT; [/code]

PS: Sorry my bad english.

Best Regards,