Re: DISTINCT ordering

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От Ron St-Pierre
Тема Re: DISTINCT ordering
Дата
Msg-id 4118F046.8050303@syscor.com
обсуждение исходный текст
Ответ на DISTINCT ordering  (Jake Stride <nsuk@users.sourceforge.net>)
Ответы Re: DISTINCT ordering  (Andrew Hammond <ahammond@ca.afilias.info>)
Re: DISTINCT ordering  (Jake Stride <nsuk@users.sourceforge.net>)
Список pgsql-novice
Jake Stride wrote:

>I have a view from which I select values, but I need to do a 'SELECT
>DISTINCT' query on a 'varchar' column and order by lower case eg:
>
>SELECT DISTINCT name FROM someview ORDER BY lower(name)
>
If this is what you want, wouldn't 'Foo' and 'foo' both show up in your
output? If you only wanted one 'foo' you could use:

SELECT DISTINCT lower(name) FROM someview ORDER BY lower(name);

otherwise something like:
SELECT lower (SS.name) FROM (SELECT DISTINCT name FROM someview) SS ORDER BY lower(name);
would return 'foo' twice in the output.


Ron


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