Hey, thanks to everyone who replied to my questions: problem solved!
I needed to: 1) do BEFORE DELETE to see the OLD variables, and 2) use a
placeholder in my format string in the RAISE EXCEPTION/NOTICE statement.
Open source newsgroups rock!
Rick Casey, Research Associate
Institute for Behavioral Genetics
Sven Willenberger wrote:
> Rick(dot)Casey(at)colorado(dot)edu presumably uttered the following on 02/25/05
>> Yes, thank you, I corrected my function from statement level to row
>> This did get rid of the error message. However, I still get no output
>> an OLD variable that should contain data: see the test variable in the
>> simple case below.
>> How else can I test OLD variables? This is the simplest test case I can
>> think of. Any suggestions would be appreciated!
>>> I think you have created a statement level trigger (If they existed in
>>> 7.4.7...) by not including FOR EACH ROW in your create statement. In
>>> statement level triggers, there is no OLD or NEW.
>>>>>> Rick Casey <rick(dot)casey(at)colorado(dot)edu> 02/24/05 1:22 PM >>>
>>> Hello all,
>>> I am trying to a simple thing: create a log history of deletes, and
>>> updates; but which I am having trouble getting to work in PG 7.4.7
>>> (under Debian Linux 2.6.8).
>>> I have reduced my code to the following trivial case:
>>> Here is the code that creates the delete trigger:
>>> create trigger PEDIGREES_hist_del_trig
>>> AFTER DELETE
>>> on PEDIGREES
>>> EXECUTE PROCEDURE logPedigreesDel();
>>> Here is the trigger code: (famindid is an integer field in the
>>> CREATE OR REPLACE FUNCTION logPedigreesDel() RETURNS TRIGGER AS '
>>> test integer;
>>> test := OLD.famindid;
>>> RAISE EXCEPTION ''OLD.famindid = '', test;
>>> return OLD;
>>> ' LANGUAGE plpgsql;
> Need a place holder for your variable in your RAISE expression (like a
> printf syntax):
> RAISE EXCEPTION ''OLD.famindid = %'', test;
> btw, if you just want to see the variable without having your function
> bail on you, try RAISE NOTICE ''OLD.famindid = %'', test;
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