Bill M,

I am not exactly sure what you mean - but have a look at exceptions in the
manual. These can be raised by triggers and trapped
by the calling application.

bill
Bill Meaney wrote:

> How can I cancel the execution of an operation before the operation takes
> place, with a trigger?
>
> CREATE TRIGGER CancelDelete FOR myTable BEFORE DELETE POSITION 1 AS
> BEGIN
> IF (someDoNotDeleteCondition = TRUE) THEN
> BEGIN
> /* cancel the delete operation here */
> END
> END
>
> Is it even possible?
>
> Bill Meaney
> wameaney@...
>
> [Non-text portions of this message have been removed]
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