A statement in mysql that takes a number from a string

 
one: 
declare @s varchar(20) 
declare @i varchar(20) 
set @i='' 
set @s=' New members must buy 350 Yuan products ' 
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 ' New members must buy 350 Yuan products ' 
union all select ' A new store must be full on its first order 20000 yuan ' 

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

In the

select substring (the query string, patindex (' % [^ 0-9] [0-9] % ', the query string) + 1, patindex (' % [0-9] [^ 0-9] % ', the query string) - patindex (' % [^ 0-9] [0-9] % ', the query string)) this can only query string first appeared in a string of Numbers

So what if a string sss8989sss / / www ofstack. com ss8989ss8989ss8989 7879 aafds789 432432432543534 how should take


The instance

 
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 

/* function : Gets the letters in the string */ 
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 
-- test  
select dbo.F_Get_STR(' test ABC123ABC') 
GO 
/* 
 function : Gets the number in the string  
*/ 
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 
-- test  
---select dbo.F_Get_Number(' test AB3C123AB5C') 
GO 

And then we can easily get all the Numbers out of the characters, no matter what combination you're in.