On Mar 29, 2007, at 10:47 , Jasbinder Singh Bali wrote:
Hi,
I've written a function using cursors as follows:
can anyone please comment on the text in red.
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CREATE OR REPLACE FUNCTION sp_insert_tbl_email_address(int4, text, text, text)
RETURNS void AS
$BODY$
DECLARE
uid int4 ;
src text;
local text;
domain text;
cur_dup_check CURSOR FOR SELECT * FROM tbl_email_address
WHERE unmask_id=$1 and source=$2 and email_local=$3 and email_domain=$4;
BEGIN
OPEN cur_dup_check ;
FETCH cur_dup_check INTO uid,src,local,domain;
--need to check the fetch status of the cursor whether any rows were returned or not and keep moving to the next record till fetch status is not zero
Huh? Why don't you simply declare a unique constraint across the columns you require?
-M