=?iso-8859-9?B?RXJ0YW4gS/zn/Gtv8Gx1?= <ertan.kucukoglu@1nar.com.tr> writes:
> I just installed PostgreSQL 9.6.1 64bit on Windows 10 64bit OS.
On Windows you'd have to use Windows' locale names. My first guess
would've been that those are completely unlike anybody else's, but
some googling suggests that "tr-TR" (dash not underscore) will work:
https://msdn.microsoft.com/en-us/library/windows/desktop/dd373814(v=vs.85).aspx
But the easy answer is to look into the pg_collation system catalog
and see what names are installed.
regards, tom lane