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case-insensitive database

Is there a way to make Postgresql case-INSENSITIVE?

Thanks
Nov 11 '05
12 21538
Thank you, that was the answer I was look for.

"Stephan Szabo" <ss****@megazon e.bigpanda.com> wrote in message
news:20******** ***********@meg azone.bigpanda. com...

On Sat, 13 Sep 2003, Relaxin wrote:
No, I mean the data.

select * from stocks where symbol = 'AADBX'
and
select * from stocks where symbol = 'aadbx'

would bring up the same result set.


Potentially on some systems it'd be possible to
generate a case insensitive collation as part of a locale
and then use such for LC_COLLATE on initdb which would make all
comparisons of text fields case insensitive. That wouldn't
let you choose some case sensitive and case insensitive
right now (until we supported different collations within
one database). Others have already given most of the normal
query change ways already I believe (ilike, using upper or
lower, etc).

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Nov 11 '05 #11
Stephan Szabo <ss****@megazon e.bigpanda.com> writes:
Potentially on some systems it'd be possible to
generate a case insensitive collation as part of a locale
and then use such for LC_COLLATE on initdb which would make all
comparisons of text fields case insensitive.


Another possibility is to create a 'case insensitive text' datatype
that has its own case-insensitive comparison operators and associated
btree opclass. You would want to create an implicit cast to text and
an automatic cast from text so as to take advantage of the existing
text-type operations. I'm not sure whether this would work cleanly
or would result in can't-choose-the-operator-to-use errors, but it'd
be worth trying.

regards, tom lane

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Nov 11 '05 #12
Relaxin wrote:
Hello....
Does anyone understand what is meant by a case-insensitive database.

You could define your own encoding, and use that.
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Nov 11 '05 #13

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