SQL快速生成汉字的首拼字母
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![]() | 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。 | |
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