| From: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | me(at)reynolds(dot)tj, pgsql-bugs(at)lists(dot)postgresql(dot)org |
| Subject: | Re: BUG #16333: position() function not equivalent to strpos() function when comparing citext |
| Date: | 2020-04-05 10:41:51 |
| Message-ID: | d86632ce-76fe-5a3e-abd1-f739b0e3e204@2ndquadrant.com |
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| Lists: | pgsql-bugs |
On 2020-04-02 23:46, Tom Lane wrote:
>> Doesn't seem fixable. Collations are probably a better way of dealing
>> with this.
>
> Yeah, now that we can do non-deterministic collations, it seems like
> citext is on the road to obsolescence. Do we have a documentation
> example of how to build a simple CI collation?
Yes, in PG12 there is a "tip" box in the citext chapter with a link to
the collation documentation which contains a command to create a
case-insensitive collation. So this should be pretty easy to find even
for casual users.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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