Question

表1

id value
---------    
 1  100
2A  200
 2  300
10  500
 8  200
....

Select * 
from table1 
order by id

将输出显示为

id value
------------    
 1 100
10 500
2A 200
 2 300
 8 200
....

如何正确订购？

预期输出

id value
----------
 1 100
 2 300
2A 200
 8 200
10 500
....

Answer 1

如果修复了最后一个字符可能是字符，那么您可以尝试以下查询

 WITH A(ID) 
 AS
 (
 SELECT '1'
 UNION ALL
 SELECT '2C'
 UNION ALL
 SELECT '2A'
 UNION ALL
 SELECT '2'
 UNION ALL
 SELECT '10'
 )
 SELECT * 
 FROM A
 ORDER BY 
 convert(int,
 Case When IsNumeric(ID) = 0 then left(ID,len(id)-1) 
 Else ID END
 ) , Case When IsNumeric(ID) = 0 then RIGHT(ID,1) Else '0' END

如果它是可变的，那么你可以编写一个用chamlter替换其ansi值或0的函数。然后关闭该栏目。

Answer 2

SELECT
LEFT(ID,1),
RIGHT(ID,1),
* 
FROM table1 
ORDER BY LEFT(ID,1),RIGHT(ID,1)

应该这样做，我甚至不确定所选语句中是否需要左右。

Answer 3

Select * 
from table1 
order by cast(replace(lower(id), 'abcdefg', '') as int),
         replace(id, '0123456789','');

Answer 4

SELECT * FROM table1 ORDER BY CAST(id as varchar(50))

Answer 5

CREATE FUNCTION [dbo].[RemoveNonAlphaCharacters](@Temp varchar(1000))
RETURNS int
AS
BEGIN
  WHILE PatIndex ('%[^0-9]%', @Temp) > 0
  SET @Temp = Stuff( @Temp, PatIndex('%[^0-9]%' , @Temp ), 1, '')
  RETURN @Temp
END

SELECT id, value
FROM dbo.Table1
ORDER BY [dbo].[RemoveNonAlphaCharacters](id) ASC

如何订购数字？

5 个答案: