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Re: Case insensitive unique constraint

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Rob Brenart schrob:

> I have a simple table to store account names... I want each name to be
> unique in a case insensitive manner... but I want the case the user
> enters to be remembered so I can't do a simple lower() on the data's
> way in.
>
> Is there an easy way to go about this?

Would creating an unique index on an expression be easy enough?
E.g. create unique index idx_foo_unique_nocase on foo ((lower(bar)));

> Am I about to write my first server side function for postgresql?

I'm afraid not :-)

regards,
Andreas
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