OK, I'm trying to count the number of records based on two criteria, this
works at the psql prompt but not in a plpgsql function
SELECT count(*) FROM mytable WHERE fieldone = 'val1' AND fieldtwo =
'val2';
This gives me back '4' which is what I expect (trust me :)
but if I try to put this in a PLPGSQL function, it doesn't work.
CREATE FUNCTION countRows (varchar, varchar) RETURNS int AS
'
DECLARE
val1 ALIAS FOR $1;
val2 ALIAS FOR $2;
total int;
BEGIN
SELECT INTO total count(*) FROM mytable WHERE fieldone =
val1 AND fieldtwo = val2;
RETURN total;
END;
' LANGUAGE PLPGSQL;
The value returned is much higher. Actaully, it is exactly what the number
should be without the AND query. No matter what I'. passing for the second
variable, I get the same result (even if it's a value not in that column
for any record)
Amy thoughts as to why this might be?
I'm using this in a procedure that will eventually delete certain rows from
a table and needs to decerement a field in another table based on how many
rows will be deleted? Can I just do a DELETE and use GET DIAGNOSTICS to
get the number of rows that were deleted?
Take care,
Jay
