a guest Sep 24th, 2018 60 Never
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  1. create or alter function dbo.is_alpha(@c nchar(1)) returns bit as
  2. begin
  3.     declare @lchar nchar(1) = LOWER(@c), @uchar nchar(1) = UPPER(@c);
  4.     if @c = 'ß' or unicode(@lchar) <> unicode(@uchar)
  5.         return 1;
  6.     return 0;
  7. end
  8. go
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