Pavel Stehule wrote:
On 08/01/2008, Chris Browne <[EMAIL PROTECTED]> wrote:
[EMAIL PROTECTED] (Gerardo Herzig) writes:
Hi all. Acording to the docs, TRUNCATE will not fire a DELETE trigger
on the table being truncated.
There is a way to capture a TRUNCATE in any way?
I think there's some sort of "to do" on that...
It ought to be not *too* difficult (I imagine!) to be able to
associate a trigger with the TRUNCATE action, and therefore run some
stored function any time TRUNCATE takes place.
For the Slony-I replication system, it would be attractive for this to
lead to attaching two functions:
- One function would return an exception so that TRUNCATE against
a subscriber node would fail...
- Another would pretty much be as simple as submitting an event;
perform createEvent('_ourcluster', 'TRUNCATE_TABLE', table_id);
A new event, TRUNCATE_TABLE, would do a TRUNCATE against the
subscribers.
This represents a pretty easy enhancement, given the new kind of
trigger.
--
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Frisbeetarianism: The belief that when you die, your soul goes up on
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Hello
theoretically you can have trigger on any statement, but I am not sure
about conformance with std. But, you can wrap TRUNCATE statement into
some procedure, and then call this procedure with some other actions.
Regards
Pavel Stehule
Yes, the TRUNCATE statement is not sql ansi, maybe is a more low level
thing than i think.
Gerardo
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