教你用SQL函数实现中文转首字母

教你用SQL函数实现中文转首字母

create function dbo.fun_getPY(@str nvarchar(255)) 

returns nvarchar(50) 
as 
begin 
declare @word nchar(1),@PY nvarchar(50) 
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'骜' as word 
union all select 'B',N'簿' 
union all select 'C',N'错' 
union all select 'D',N'鵽' 
union all select 'E',N'樲' 
union all select 'F',N'鳆' 
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'沤' 
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'箨' 
union all select 'W',N'鹜' 
union all select 'X',N'鑂' 
union all select 'Y',N'韵' 
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
GO

select dbo.fun_getPY('中国')