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• 如何从结构图中提取某些特性
原标题:How to extract Certain nth character from a string in SQL

我的田地价值为xxx-xxx-xxxxx-xxxx-x。 如何从该法典中摘取第10条的性质。

问题回答
select substring( xxx-xxx-xxx-xxxxx-xx-x , 10, 1)

关于MSDN的功能的文件是here

Fiddle demo是。 (用不同信件,你可以清楚地看到哪封信摘取。)

使用<条码> 职能

选定次体 (xxx-xxx-xxxxxx-xx-x , 10, 1)

您可使用http://technet.microsoft.com/en-us/library/ms187748.aspx”rel=“noreferer”SUBSTRING

SELECT SUBSTRING(field, 10, 1) 

<>field/strong> 是回报数值的。

declare @x varchar(20) =  xxx-xxx-xxx-xxxxx-xx-x 

select SUBSTRING(@x,10,CHARINDEX( - ,@x)-4 )

下面的法典将在划界之后从左边或右边再重新编号;具体来说,划界员是 com,它正在寻找第2部分,从右边计算。

declare

@str_orig VARCHAR(256)= 123,345,8,6,7 ,
@delimit varchar(50) = , ,
@loc int =2,
@from_left bit =0



SELECT value, row_number()  over( order by( select 1)) as row_num
into #split
FROM STRING_SPLIT(@str_orig, @delimit)

declare @result varchar(256)
if @from_left=1
 begin
 set @result = ( select top 1  value  from  #split  where row_num=@loc)
 end
else
 begin

 set @result = ( select top 1  value  from  #split
 where row_num= (SELECT MAX(ROw_num) -(@loc-1) FROM  #split)
 )
 
 end


select @result




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