SQl 服务器：首先对字母数字进行排序，然后对数字进行排序

Question

SELECT  dbo.base_project.id as ID, 
        dbo.base_project.name as Name,
        dbo.base_project.status
FROM         dbo.base_project
ORDER BY   
Case When IsNumeric(dbo.base_project.name) = 1 
     then Right(Replicate('0',21) + dbo.base_project.name, 20)
     When IsNumeric(dbo.base_project.name) = 0 
     then Left(dbo.base_project.name + Replicate('',21), 20)
     Else dbo.base_project.name End

我可以按数字排序，然后 alphanumeric.I 需要反向排序，我需要先对字母数字排序，然后对数字排序

示例：

1, 3, 13036, 101-2011-009X2, 20-100281-01, ELO-001, ELO001B, ELO002B

Answer 1

您可以使用子查询来完成此操作。子查询将数字与非数字分开，并为它们提供计算字段，以便它们可以在主查询的顺序中使用。

SELECT 
    A.ID
,   A.Name
,   A.status
FROM 
(
    SELECT  
        dbo.base_project.id as ID
    ,   dbo.base_project.name as Name
    ,   dbo.base_project.status
    ,   1 as ordering
    ,   RIGHT(REPLICATE('0',21) + dbo.base_project.name, 20) As padded
    FROM dbo.base_project
    WHERE ISNUMERIC(dbo.base_project.name) = 1
UNION
    SELECT  
        dbo.base_project.id as ID
    ,   dbo.base_project.name as Name
    ,   dbo.base_project.status
    ,   0 as ordering
    ,   LEFT(dbo.base_project.name + REPLICATE('',21), 20) As padded
    FROM dbo.base_project
    WHERE ISNUMERIC(dbo.base_project.name) <> 1
) A
ORDER BY A.ordering, A.padded

SQl 服务器：首先对字母数字进行排序，然后对数字进行排序

SQl Server : sort alphanumeric first followed by Numeric

sql

sorting

alphanumeric