Re: Trigger with conditional predicates

> On 1 Jan 2021, at 16:56, Dirk Mika <Dirk.Mika@mikatiming.de> wrote:
>
> Hi all and a happy new Year!
>
> We have an Oracle schema that is to be converted to PostgreSQL, where conditional predicates are used in some
triggers.
>
> In particular, columns are populated with values if they are not specified in the update statement which is used.
> Usually with an expression like this:
>
>      IF NOT UPDATING('IS_CANCELED')
>      THEN
>         :new.is_canceled := ...;
>      END IF;
>
> I have not found anything similar in PostgreSQL. What is the common approach to this problem?
>
> BR
> Dirk

Can't you use column defaults to handle these cases?

Alban Hertroys
--
There is always an exception to always.