Hi all,<br /><br />I have a question regarding functions. How can I return zero rows from a function whose return type
isa table row? I did the following test and it did not work as expected:<br /><br />CREATE OR REPLACE FUNCTION<br />
fn_get_user (integer) RETURNS usertable AS '<br /><br />DECLARE<br /> in_userid ALIAS for $1;<br
/> resulter usertable%ROWTYPE;<br /><br />BEGIN<br /><br /> IF in_userid IS NULL THEN<br />
RAISEEXCEPTION ''No user provided'';<br /> RETURN null;<br /> END IF;<br /><br /> SELECT INTO resulter<br
/> usertable.*<br /> FROM<br /> usertable<br /> WHERE<br /> id = in_userid;<br /><br
/> IF FOUND THEN<br /> RETURN resulter;<br /> ELSE<br /> RETURN null;<br /> END IF;<br /><br
/>END;'LANGUAGEplpgsql;<br /><br />>select * from fn_get_user(-1);<br /> id | col1 | col2 | col3| name | email <br
/>----+------------+-------------+------------+--------<br/> | | | |
| |<br />(1 row)<br /><br />This returns a null row. I am trying to make it behave such that it returns zero rows
likea straight select.<br /><br />>select * from usertable where id =-1;<br /> id | col1 | col2 | col3| name |
email<br /> ----+------------+-------------+------------+--------<br />(0 rows)<br /><br />Is this possible in
anyway?<br/><br />Regards,<br />Sebastian<br />
