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Re: LIKE/ESCAPE implementation

From: Thomas Lockhart <lockhart(at)alumni(dot)caltech(dot)edu>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Thomas Swan <tswan(at)olemiss(dot)edu>, Hackers List <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: LIKE/ESCAPE implementation
Date: 2000-08-06 03:45:57
Message-ID: 398CDF75.73126950@alumni.caltech.edu (view raw or flat)
Thread:
Lists: pgsql-hackers
> > What is ILIKE? afaik it is not in SQL9x, so is there any reason to have
> > that rather than the full regular expression case-insensitive operator
> > ("~*") we already have?
> Just that a lot of people have asked for it, over and over again ...
> see the archives ...

I had thought it would be trivial to do ILIKE, but now I'm not sure how
to handle the multi-byte case. It isn't sufficient to wrap the
single-byte comparison arguments with tolower() is it??

btw, do the archives have a full discussion of the correct syntax for
this? I recall people asking for it, but since it is a non-standard
feature what implementation example should I follow? What alternatives
are there? Is "check the archives" sufficient to produce a complete
design discussion? What thread??

                      - Thomas

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