Re: compare lower case and upper case when encoding is utf-8 - Mailing list pgsql-hackers

On 2012/6/18 7:13, Peter Eisentraut wrote:
> On lör, 2012-06-16 at 16:21 +0800, Quan Zongliang wrote:
>> I found that lower case is less than upper case when the db is
>> created
>> with utf8.
>> I tried below
>>       locale   en_US.utf8   'A'<'a'     false
>>       locale   ja_JP.utf8   'A'<'a'     true
>>       locale   zh_CN.utf8   'A'<'a'     false
>> Under Windows
>>       locale   Chinese_China   'A'<'a'     false
>>
>> I am not sure it is normal or not.
>> But in Chinese, the lower case should be greater than upper, same as
>> locale C.
> The operating system locale determines that, so you need to look there
> if you don't agree with the result.
>
> http://wiki.postgresql.org/wiki/FAQ#Why_do_my_strings_sort_incorrectly.3F
>
>
I see, thank you.

Quan Zongliang