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Re: Trigger on column - Mailing list pgsql-performance

From A. Kretschmer
Subject Re: Trigger on column
Date
Msg-id 20090720092356.GK12162@a-kretschmer.de
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In response to Trigger on column  ("ramasubramanian" <ramasubramanian.g@renaissance-it.com>)
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In response to ramasubramanian :
> Dear all,
>    Can we create a trigger on particular column of a table?

No, but you can compare OLD.column and NEW.column and return from the
function if NEW.column = OLD.column.


Andreas
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Andreas Kretschmer
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