Hi all,
I have a table something like this -
PointTable(PointName varchar, PointType integer, PointValue integer);
I have to write a trigger before UPDATE on this table. In the trigger function, I need to check which field of the table is going to be updated...based on this I need to do some operation.
CREATE FUNCTION Trg_UpdPointTable RETURNS TRIGGER AS'
BEGIN
IF PointType is being modified THEN
// do some operation.
ELSIF PointValue is being modified THEN
// Do some operation
END IF;
END;
CREATE TRIGGER PTableTrg BEFORE UPDATE ON PointTable FOR EVERY ROW EXECUTE PROCEDURE Trg_UpdPointTable();
Is this functionality possible. I am using PostgreSQL version 7.4.3.
Thanks in advance.
Regards,
Pradeep