SQL Server 提取数字、提取英文、提取中文的sql语句
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2023-01-03 17:09:10
--sql 判断字段值是否有中文
create function fun_getcn(@str nvarchar(4000))
returns nvarch...
--sql 判断字段值是否有中文 create function fun_getcn(@str nvarchar(4000)) returns nvarchar(4000) as begin declare @word nchar(1),@cn nvarchar(4000) set @cn='' while len(@str)>0 begin set @word=left(@str,1) if unicode(@word) between 19968 and 19968+20901 set @cn=@cn+@word set @str=right(@str,len(@str)-1) end return @cn end select dbo.fun_getcn('asdkg论坛kdl') --论坛 select dbo.fun_getcn('asdkg論壇kdl') --論壇 select dbo.fun_getcn('asdkdl') --空 ------------------------------------- --提取数字 if object_id('dbo.get_number2') is not null drop function dbo.get_number2 go create function dbo.get_number2(@s varchar(100)) returns varchar(100) as begin while patindex('%[^0-9]%',@s) > 0 begin set @s=stuff(@s,patindex('%[^0-9]%',@s),1,'') end return @s end go --测试 print dbo.get_number('呵呵abc123abc') go --123 -------------------------------------------------------------------- --提取英文 if object_id('dbo.get_str') is not null drop function dbo.get_str go create function dbo.get_str(@s varchar(100)) returns varchar(100) as begin while patindex('%[^a-z]%',@s) > 0 begin set @s=stuff(@s,patindex('%[^a-z]%',@s),1,'') end return @s end go --测试 print dbo.get_str('呵呵abc123abc') go -------------------------------------------------------------------- --提取中文 if object_id('dbo.china_str') is not null drop function dbo.china_str go create function dbo.china_str(@s nvarchar(100)) returns varchar(100) as begin while patindex('%[^吖-座]%',@s) > 0 set @s = stuff(@s,patindex('%[^吖-座]%',@s),1,n'') return @s end go print dbo.china_str('呵呵abc123abc') go -------------------------------------------------------------------- --过滤重复字符 if object_id('dbo.distinct_str') is not null drop function dbo.distinct_str go create function dbo.distinct_str(@s nvarchar(100),@split varchar(50)) returns varchar(100) as begin if @s is null return(null) declare @new varchar(50),@index int,@temp varchar(50) if left(@s,1)<>@split set @s = @split+@s if right(@s,1)<>@split set @s = @s+@split while charindex(@split,@s)>0 and len(@s)<>1 begin set @index = charindex(@split,@s) set @temp = left(@s,charindex(@split,@s,@index+len(@split))) if @new is null set @new = isnull(@new,'')+@temp else set @new = isnull(@new,'')+replace(@temp,@split,'')+@split while charindex(@temp,@s)>0 begin set @s=stuff(@s,charindex(@temp,@s)+len(@split),charindex(@split,@s,charindex(@temp,@s)+len(@split))-charindex(@temp,@s),'') end end return right(left(@new,len(@new)-1),len(left(@new,len(@new)-1))-1) end go print dbo.distinct_str('a,a,b,c,c,b,c,',',') --a,b,c go -------------------------------------------------------------------- --过滤重复字符2 if object_id('dbo.distinct_str2') is not null drop function dbo.distinct_str2 go create function dbo.distinct_str2(@s varchar(8000)) returns varchar(100) as begin if @s is null return(null) declare @new varchar(50),@index int,@temp varchar(50) while len(@s)>0 begin set @new=isnull(@new,'')+left(@s,1) set @s=replace(@s,left(@s,1),'') end return @new end go select dbo.distinct_str2('aabccd') --abcd go -------------------------------------------------------------------- if object_id('dbo.split_str') is not null drop function dbo.split_str go create function dbo.split_str( @s varchar(8000), --包含多个数据项的字符串 @index int, --要获取的数据项的位置 @split varchar(10) --数据分隔符 ) returns varchar(100) as begin if @s is null return(null) declare @splitlen int select @splitlen=len(@split+'a')-2 while @index>1 and charindex(@split,@s+@split)>0 select @index=@index-1,@s=stuff(@s,1,charindex(@split,@s+@split)+@splitlen,'') return(isnull(left(@s,charindex(@split,@s+@split)-1),'')) end go print dbo.split_str('aa|bb|cc',2,'|') -- go
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