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From: Robins <tharakan@gmail.com>
To: pgsql-performance@postgresql.org
Subject: Locking vs. Exceptions
Date: Thu, 2 Nov 2006 18:15:53 +0530
Message-ID: <36af4bed0611020445s445e3fe8o344f529190a8dfea@mail.gmail.com> (raw)

Hi,

The documentation says that function blocks with exceptions are far costlier
than without one.

So if I need to implement an INSTEAD OF trigger (after checking for unique
constraint violations) which way should I go ?

1. Get a table lock
2. Use 'Select ... For Update' (which could be used to lock only the desired
recordsets)
3. Use Exceptions

Any advice / experiences or even pointers would be helpful.

Thanks
Robins Tharakan

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