Hello,
2008/9/11 Chris Velevitch <chris.velevitch@gmail.com>:
> In 7.4, how do I declare that a column in a table is to be
> automatically set to the value of some fixed expression whenever a row
> is updated?
>
> Eg column last_modified is always set to current_timestamp
>
you should to use trigger
regards
Pavel Stehule
>
>
> Chris
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> Chris Velevitch
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> www.apugs.org.au
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