獲取中文拼音首字母的SQL函式

2021-06-15 03:30:15 字數 1342 閱讀 5882

create function [dbo].[f_getpy](@str nvarchar(4000))


returns nvarchar(4000)


asbegin


declare @word nchar(1),@py nvarchar(4000)


set @py=''


while len(@str)>0


begin


set @word=left(@str,1)


--如果非漢字字元，返回原字元


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)


endreturn @py


end

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