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sql中取字符串中的数字语句_MySQL

Jun 01, 2016 pm 01:49 PM
20 string

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one:
declare @s varchar(20)
declare @i varchar(20)
set @i=''
set @s='新会员必须购买350元产品'
while PATINDEX ('%[0-9]%', @s)>0
begin
set @i=@i+substring(@s,PATINDEX ('%[0-9]%', @s),1)
set @s=stuff(@s,1,PATINDEX ('%[0-9]%', @s),'')
end
select @i
--
300

two:
declare @a table(id int identity(1,1),a varchar(100))
insert @a select '新会员必须购买350元产品'
union all select '新店首次定货必须满20000元'


select left(right(a,len(a)-patindex('%[0-9]%',a)+1),len(right(a,len(a)-patindex('%[0-9]%',a)+1))-1) from @a
 

上在的

select substring(所查询字符串,patindex('%[^0-9][0-9]%',所查询字符串)+1,patindex('%[0-9][^0-9]%',所查询字符串)-patindex('%[^0-9][0-9]%',所查询字符串)) 这个只能查询第一次在字符串出现的数字串

那么如果出现字符串什么样子的呢 sss8989sss http://www.hzhuti.com ss8989ss8989ss8989 7879aafds789 432432432543534  应该怎么取呢


实例

 代码如下 复制代码
create function fn_GetNum(@s varchar(8000))
returns varchar(8000)
as
begin
select @s = stuff(stuff(@s, 1, patindex('%[0-9, .]%', @s) - 1, ''),
patindex('%[^0-9, .]%', stuff(@s, 1, patindex('%[0-9, .]%', @s) - 1, '')),
len(@s), '')
return @s
end


declare @t table(s varchar(8000))

insert @t select 'aaa11112bbb'
union all select 'ccc212sss'
union all select 'sss21a'

select dbo.fn_GetNum(s) as result from @t


select substring(s,patindex('%[^0-9][0-9]%',s)+1,patindex('%[0-9][^0-9]%',s)-patindex('%[^0-9][0-9]%',s))  from @t

 

/*功能:获取字符串中的字母*/
CREATE FUNCTION dbo.F_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
select  dbo.F_Get_STR('测试ABC123ABC')

GO

/*    
    功能:获取字符串中的数字
 */
create function dbo.F_Get_Number (@S varchar(100))
returns int
AS
begin
    while PATINDEX('%[^0-9]%',@S)>0
          begin
                set @s=stuff(@s,patindex('%[^0-9]%',@s),1,'')
          end
    return cast(@S as int)
end
--测试
---select  dbo.F_Get_Number('测试AB3C123AB5C')
GO
 

这样之后不管你是那种组合我们都可以方便的把字符中的数字全部取出来。

更多详细内容请查看:http://www.111cn.net/database/mssqlserver/42376.htm

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