"Edwin Quijada" <listas_quijada@hotmail.com> writes:
> I got error about a length field varchar. I have a table with a field type
> varchar(20) but if I try to set to this field more than 20 characters I got
> error.
> I did a function to control the length of data and put it on trigger but
> when it ocurrs I got the error anyway and the trigger not works.
The length constraint is checked before triggers are fired, I believe.
If you want silent truncation rather than an error, use a text column
(or unconstrained varchar) and put the truncation behavior into your
trigger.
regards, tom lane