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Re: Me again with an insert trigger problem

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On 2/27/24 14:11, Thiemo Kellner wrote:
Am 27.02.2024 um 21:42 schrieb Adrian Klaver:
Also not sure what this:

select NODE_TYPE⠒NAME into V⠒NODE_TYPE⠒NAME
               from NODE⠒V
              where 1 = 1
                and ID = new.NODE⠒ID
                and 1 = 1;

is supposed to be doing especially the 1 = 1 tests?

The select retrieves the type of the node in order to determine whether a task name must be given or not.

It is a habit of mine to pad conditions in the where clause. This way, it is easy to comment/uncomment parts of the clause for testing purposes. Coming from Oracle, I missed that using "true" is also possible and better because clearer.


create table true_test(id integer);
insert into true_test select * from generate_series(1, 10000);

select count(*) from true_test where true;
 count
-------
 10000
(1 row)

select count(*) from true_test where id < 100 and true;
 count
-------
    99



Seems  '... where  ID = new.NODE⠒ID ...' is sufficient.

Right. Semantically sufficient.


Also what do you want to return as NEW?

The unchanged new record. And it works as intended.

Thanks for your help!



--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx






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