From: | Chang Chao <charleschung(dot)cn(at)gmail(dot)com> |
---|---|
To: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: How strings are sorted by LC_COLLATE specifically? |
Date: | 2010-12-01 14:31:33 |
Message-ID: | AANLkTinYeN1FdhtYqOBr34MxpDYz4qceHXK58Sc0Y1eC@mail.gmail.com |
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Lists: | pgsql-sql |
Hi Peter.
When I looked into the source(),came to know that strings are sorted like this.
int result = strcoll(a, b);
if (result == 0) {
result = strcmp(a,b);
}
return result;
On Wed, Dec 1, 2010 at 4:31 AM, Peter Eisentraut <peter_e(at)gmx(dot)net> wrote:
> On tor, 2010-11-25 at 14:42 +0900, Chang Chao wrote:
>> How strings are sorted when LC_COLLATE = ja_JP.UTF-8.
>> I tried to read the documention on that,but there are just a few
>> words,
>> like LC_COLLATE determines string sort order,
>> Is there a specific reference about this?
>> So I can implement an equivalent string sort function in JAVA.
>> because some of the sort logic is here.
>
> The actual string comparison is done by the strcoll() function in the
> operating system's C library.
>
>
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