On Feb 17, 2011, at 2:50 PM, Tom Lane wrote:

> I observe the following discrepancy between the 9.0 and 9.1 citext
> install scripts:
> 
> ***************
> *** 52,58 ****
>      STORAGE        = extended,
>      -- make it a non-preferred member of string type category
>      CATEGORY       = 'S',
> !     PREFERRED      = false
>  );
> 
>  --
> --- 49,56 ----
>      STORAGE        = extended,
>      -- make it a non-preferred member of string type category
>      CATEGORY       = 'S',
> !     PREFERRED      = false,
> !     COLLATABLE     = true
>  );

Oh, interesting. Would be nice if the docs has a link to the COLLATE clause 
docs.

  http://developer.postgresql.org/pgdocs/postgres/sql-createtype.html

So I can see how to use it. :-)

David


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