Question

我正在尝试从两个类别中进行选择，但我希望通过对每个five

的categories.进行分组来在类别之间进行切换

以下是表格

SELECT MC.main_category_id, MC.main_category_name, MC.order_by_num AS MC_Order,
C.category_id, C.category_name, C.order_by_num AS C_Order, C.gift, I.item_id,                                            I.model_num, I.item_title, B.brand_name, I.price, I.suggested_price, i.description 
    FROM dbo.tblMainCategories AS MC
    INNER JOIN dbo.tblCategories AS C ON MC.main_category_id = C.main_category_id
    INNER JOIN dbo.tblItemCategories AS IC ON MC.main_category_id = IC.main_category_id
    AND C.category_id = IC.category_id 
    INNER JOIN dbo.tblItems AS I ON IC.ic_item_id = I.item_id 
    INNER JOIN dbo.tblBrands AS B ON I.brand_id = B.brand_id
WHERE (MC.store_id = 14) AND (IC.store_id = 14) AND I.isActive = 1 
And MC.main_category_id in (1,2)
ORDER BY MC.order_by_num, C.order_by_num, I.order_by_num,I.price

如何对此结果进行排序，应该按MainCategory 1中的5个MainCategory 2然后5个MainCategory 1以及5个MainCategory 1对其进行排序，并继续5个直到结束。

MainCategory 2包含的项目多于MainCategory 1。 {{1}}的其余部分也应该在底部。

Answer 1

你可以尝试这样的事情。在将它们插入SQL表时，请确保您的结果按照您想要的顺序排序。将查询分成2个重复项，将结果插入到某些临时表中。然后，您可以遍历结果，将每个5插入到第三个结果表中。

以下是我使用我可以使用的数据库的方法示例。

create table #result(AccountID int, AccountTypeID int, AccountName varchar(128))


select AccountID, ab.AccountTypeID, AccountName INTO #Temp from AccountBase ab
join AccountType at on ab.AccountTypeId = at.AccountTypeId
where ab.AccountTypeId in (1)
order by AccountName

select AccountID, ab.AccountTypeID, AccountName INTO #Temp2 from AccountBase ab
join AccountType at on ab.AccountTypeId = at.AccountTypeId
where ab.AccountTypeId in (2)
order by AccountName



While ((select count(*) from #Temp) > 0 or (select count(*) from #Temp2) > 0)
begin 

    If (select count(*) from #Temp) > 0
        Begin
            insert into #result select Top(5) * from #Temp 
            delete top(5) from #Temp 
        End
    If (select count(*) from #Temp2) > 0
        Begin
            insert into #result select Top(5) * from #Temp2
            delete top(5) from #Temp2 
        End
End

select * from #result

drop table #Temp
drop table #Temp2
drop table #result

我相信SQL 2000支持所有内容。

在结果之间交替排列5个连续行

1 个答案: