sql server获取中文首字母函数
java的同学可以了解下pinyin4j,js可以了解ChinesePY.js
获取拼音的意义多在于需对中文进行排序,例如:通讯录。
获取汉字首字母的解决方案有
- 利用CJK统一表意符
- 利用GBK
- 利用Unicode编码
利用Unicode编码
第二个方法不太好用有的字获取不出来,这个比较顶
ALTER function [dbo].[GetPY](@str varchar(500)) returns varchar(500) as begin declare @word nchar(1),@PY nvarchar(4000) set @PY='' 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
利用GBK
把@length=1改成@length=1len(@str) ,效果从输入首字的首字母变成输出全部字的首字母
create function [dbo].[GetPY](@str varchar(500)) returns varchar(500) as begin declare @cyc int,@length int,@str1 varchar(100),@charcate varbinary(20) set @cyc=1--从第几个字开始取 set @length=1--len(@str)--输入汉字的长度 只需要返回首字母 set @str1=''--用于存放返回值 while @cyc=0XB0A1 and @charcate=0XB0C5 and @charcate=0XB2C1 and @charcate=0XB4EE and @charcate=0XB6EA and @charcate=0XB7A2 and @charcate=0XB8C1 and @charcate=0XB9FE and @charcate=0XBBF7 and @charcate=0XBFA6 and @charcate=0XC0AC and @charcate=0XC2E8 and @charcate=0XC2E8 and @charcate=0XC4C3 and @charcate=0XC5B6 and @charcate=0XC5BE and @charcate=0XC6DA and @charcate=0XC8BB and @charcate=0XC8F6 and @charcate=0XCBFA and @charcate=0XCDDA and @charcate=0XCEF4 and @charcate=0XD1B9 and @charcate=0XD4D1 and @charcate
总结
以上为个人经验,希望能给大家一个参考,也希望大家多多支持IT俱乐部。