Question

我无法对此进行排序。我希望DateId按照productName排序的整个结果集无法使其工作。

SELECT  d.DateId,
    s.product_name1 as productName
FROM    dbo.SaleDates d
INNER JOIN dbo.Sale s ON s.saleId = d.saleId

UNION ALL

SELECT  d.DateId,
    s.product_name2 as productName
FROM    dbo.SaleDates d
INNER JOIN dbo.Sale s ON s.saleId = d.saleId

UNION ALL

SELECT  d.DateId,
    s.product_name3 as productName
FROM    dbo.SaleDates d
INNER JOIN dbo.Sale s ON s.saleId = d.saleId
order by d.DateId, productName

基本上不确定在何处以及如何添加此订单。我不想为每个选择添加一个订单，因为那时我会有一些订单子集。我想订购-entire-结束结果集......

Answer 1

你可以试试这个：

SELECT * FROM 
(
    SELECT  d.DateId as DateId,
        s.product_name1 as productName
    FROM    dbo.SaleDates d
    INNER JOIN dbo.Sale s ON s.saleId = d.saleId

    UNION ALL

    SELECT  d.DateId as DateId,
        s.product_name2 as productName
    FROM    dbo.SaleDates d
    INNER JOIN dbo.Sale s ON s.saleId = d.saleId

    UNION ALL

    SELECT  d.DateId as DateId,
        s.product_name3 as productName
    FROM    dbo.SaleDates d
    INNER JOIN dbo.Sale s ON s.saleId = d.saleId
) AS A
order by DateId, ProductName

Answer 2

引用列别名（在您的情况下为DateId，Productname）

select 1 a
union all
select 2 a
order by a desc

或参考列号

select 1 a
union all
select 2 a
order by 1

Answer 3

    Select Col1, Col2 from tblA where <some condition>
    Union All
    Select Col1,Col2 from tblB where <some condition>
    Union All
    Select Col1,Col2 from tblC where <some condition>

    Order By 1,2 -- means by first column,second column

-- or Order By Col1, Col2

但是你的工作应该很好Order by DateId,productName

此外，您可以通过在一些临时表中捕获公共结果集，然后在所需的列上执行联合，而不是在Sales和SalesDate表中按3次，而不是单击Sales和SalesDate表，例如。

SELECT d.DateId,s.product_name1,s.product_name2,s.product_name3
INTO #temp
FROM    dbo.SaleDates d
INNER JOIN dbo.Sale s ON s.saleId = d.saleId

Select t.DateId,t.product_name1 As productName From #temp t Union All
Select t.DateId,t.product_name2 From #temp t Union All
Select t.DateId,t.product_name3 From #temp t 
Order By DateId,productName

Drop Table #temp

希望这有帮助

Answer 4

您可以使用CTE。或者只是做：

Select res.DateID, res.productName from 
(
SELECT  d.DateId,
    s.product_name1 as productName
FROM    dbo.SaleDates d
INNER JOIN dbo.Sale s ON s.saleId = d.saleId

UNION ALL

SELECT  d.DateId,
    s.product_name2 as productName
FROM    dbo.SaleDates d
INNER JOIN dbo.Sale s ON s.saleId = d.saleId

UNION ALL

SELECT  d.DateId,
    s.product_name3 as productName
FROM    dbo.SaleDates d
INNER JOIN dbo.Sale s ON s.saleId = d.saleId
)
order by res.DateId, res.productName

如何对一个联盟进行排序

4 个答案: