sqlservice 查询该字段的值是否为数字、不包含a-z字母、获取中文的首字母

最新推荐文章于 2023-11-30 16:02:55 发布

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最新推荐文章于 2023-11-30 16:02:55 发布

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原文链接：http://www.cnblogs.com/qgc88/p/3340617.html

本文探讨了SQL查询技术，特别关注如何筛选特定GUID的记录，并排除包含英文字母的中文首字母。同时，介绍了一个自定义函数用于从字符串中提取中文首字母。

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select zjm from xskh where guid_yw='e6ee44f3-98ab-4446-bd9b-db2e525d3b24'
and zjm not like '%[ABCDEFGHIJKLMNOPQRSTUVWXYZ]%'--不包含a-z字母

select * from xskh where (ISNUMERIC(aname_long)=1 or isnull(aname_long,'')='')--ISNUMERIC 函数是判断该字段的值是否为数字是=1不是=0 ，但不能判断特殊字符如#、*

----------------------获取中文的首字母------
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'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