Thread: Statement Triggers

Hi,

Can anyone point me at a comprehensive example of statement (as opposed to
row) triggers? I've googled it and looked through the documentation, but
couldn't find a complete example relevant to what I'm trying to do.

Specifically, what features of the SQL statement that triggered the event
are available to the function invoked by the trigger? Say I wanted to write
all INSERT statements executed on a table into a log file. How would I
access the original statement in the triggered function? If I cannot access
the statement itself, what information is available for statement based
triggers?

Thanks.

Gordan

In response to Gordan Bobic :
> Specifically, what features of the SQL statement that triggered the event
> are available to the function invoked by the trigger? Say I wanted to write

http://www.postgresql.org/docs/8.4/interactive/plpgsql-trigger.html

Except for NEW and OLD.


> all INSERT statements executed on a table into a log file. How would I
> access the original statement in the triggered function? If I cannot access

You have no access, the statement is not visible.

You can use such a TRIGGER, for instance, to send a message to clients
via LISTEN/NOTIFY.


Regards, Andreas
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Andreas Kretschmer
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