SQL快速生成汉字的首拼字母
经常要对姓名按拼音搜索。
所以需要做如下函数来快速获取首拼
代码如下:
[sql]
USE [tempdb]
GO
/****** Object: UserDefinedFunction [dbo].[fun_getPY] Script Date: 05/23/2012 18:03:45 ******/
www.atcpu.com SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
/*
获取汉字的首拼音
如果是非汉字字符
*/
ALTER function [dbo].[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 (
www.atcpu.com 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
www.atcpu.com return upper(@PY)
end
调用如下:
[sql]
select dbo.[fun_getPY]('中国人') 首拼
结果:
首拼
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ZGR
希望以上对
大家有帮助。