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標量值函數:獲取漢字的拼音首字母縮寫

歡歡歡歡 發表于 2020-5-23 11:58

腳本:

USE [DB]

GO

 

/****** Object:  UserDefinedFunction [dbo].[fun_getPY]    Script Date: 2020/5/23 11:46:13 ******/

SET ANSI_NULLS ON

GO

 

SET QUOTED_IDENTIFIER ON

GO

 

create 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)

--如果非漢字字符,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

 

GO

 

用法:

select top 20 Name,dbo.fun_getPY(Name) from [User]

select top 20 Name from [User] where dbo.fun_getPY(Name)='HH'