获取汉字第一个字符的存储过程 by zhouwillpower

Create  function fun_GetPY     

@str nvarchar(4000)  returns nvarchar(4000)

As

begin
 declare @word nchar(1),@PY nvarchar(4000)
 set @PY=''
 while len(@str)>0
 begin
  set @word=left(@str,1)
  --如果非汉字字符，返回原字符
      set @PY=@PY+(case when unicode(@word) between 19968 and 19968+20901
       then (   select top 1 PY   from   ( 
                                 select 'A' as PY,N'驁' as word
                                 union all select 'B',N'簿'
                                 union all select 'C',N'錯'
                    union all select 'D',N'鵽'
                    union all select 'E',N'樲'
                           union all select 'F',N'鰒'
                    union all select 'G',N'腂'
                    union all select 'H',N'夻'
                    union all select 'J',N'攈'
                    union all select 'K',N'穒'
                    union all select 'L',N'鱳'
                    union all select 'M',N'旀'
                    union all select 'N',N'桛'
                    union all select 'O',N'漚'
                    union all select 'P',N'曝'
                    union all select 'Q',N'囕'
                    union all select 'R',N'鶸'
                    union all select 'S',N'蜶'
                    union all select 'T',N'籜'
                    union all select 'W',N'鶩'
                    union all select 'X',N'鑂'
                    union all select 'Y',N'韻'
                    union all select 'Z',N'咗'
                       ) T   where word>=@word collate Chinese_PRC_CS_AS_KS_WS order by PY ASC ) 
                      else @word 
                 end)
    set @str=right(@str,len(@str)-1)
  end
return @PY
end