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Re: postgresql order lowercase before uppercase

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Am 18.03.21 um 17:19 schrieb Laurenz Albe:
> On Thu, 2021-03-18 at 15:39 +0100, basti wrote:
>> I need to as follow:
>>
>> ande
>> Amma
>> Anit
>> Anti
>> Brac
>> Cali
>> ....
>>
>> I have try ORDER by name COLLATE 'C';
>>
>> but this order as follow:
>>
>> Amma
>> Anit
>> Anti
>> Brac
>> Cali
>> ....
>> ande
> 
> Create an ICU collation:
> 
>   CREATE COLLATION inv (PROVIDER = icu, LOCALE = "en-US@CaseFirst=LowerFirst");
> 
> Then use
> 
>   ORDER BY name COLLATE inv
> 
> Yours,
> Laurenz Albe
> 

I have try the inv collate, that does not work on PG 9.6 and 10.

Order is the same as without collate.

SELECT a.name
    FROM foo as a
    LEFT JOIN (SELECT name from foo WHERE name = 'lowercase name') as b
    on a.name = b.name
    ORDER by b.name,a.name

does it.

perhaps there is a better way?
There is only one name in lowercase and this one must be the first one.








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