Re: [HACKERS] compare lower case and upper case when encoding is utf-8
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 -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
Re: [HACKERS] compare lower case and upper case when encoding is utf-8
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 -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
[HACKERS] compare lower case and upper case when encoding is utf-8
Hi hackers, 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. I made some code try to fix it. It seems to work fine. Quan Zongliang -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
