Aftab Alam wrote:
Hello,
I want to create a trigger in PostgresSQL
In trigger, Before inserting the record, if data is already in the table,
the trigger fire the mesaage that data is already there, and after that
trigger ckeck for next insert statement.
Aftab - can you explain in some more detail. Raising an error on an
insert will happen automatically if you violate a unique constraing.
What is this "next insert statment" you're talking about?
--
Richard Huxton
Archonet Ltd
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