Re: Order by lower(column-alias) doesn't work... - Mailing list pgsql-general

From Tom Lane
Subject Re: Order by lower(column-alias) doesn't work...
Date
Msg-id 6288.1590672402@sss.pgh.pa.us
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In response to Re: Order by lower(column-alias) doesn't work...  (Andreas Joseph Krogh <andreas@visena.com>)
Responses Re: Order by lower(column-alias) doesn't work...  (Andreas Joseph Krogh <andreas@visena.com>)
List pgsql-general
Andreas Joseph Krogh <andreas@visena.com> writes:
> Is there a way to define "sorting-rules" on custom-types so that I can have
> ORDER BY <my_array_of_custom_types_alias> and PG will pick my custom odering?

You'd have to write your own type, which would be a lotta work :-(.

A possible partial answer is to define the composite type as

    firstname citext, lastname citext, other-fields-here

and then the regular composite-type comparison rule would give you
approximately what you said you wanted ... but only approximately.

            regards, tom lane



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