SQL Server-行到列（分组）

我曾尝试使用PIVOT将一些行合并到列中，但问题是，我必须对它们进行分组，我不知道该如何做

SQL查询：

select  res.tipo,
            it.itemname as item,
            sum(resi.quantity) as qt
from    Reserve as res inner join
            ReserveItems as resi on res.id_reserve = resi.id_reserve inner join
            Items as it on resi.defindex = it.defindex
where   res.situacao = 3
group by res.tipo, it.id, it.itemname
order by tipo, it.id

结果:

tipo item qt ------ ---------------------------------------------------------------------------------------------------- ----------- 0 Mann Co. Supply Crate Key 6 0 Tour of Duty Ticket 10 0 Reinforced Robot Emotion Detector 5 0 Reinforced Robot Bomb Stabilizer 1 0 Battle-Worn Robot Taunt Processor 3 0 Battle-Worn Robot KB-808 22 0 Battle-Worn Robot Money Furnace 19 1 Mann Co. Supply Crate Key 41 1 Tour of Duty Ticket 31 1 Pristine Robot Currency Digestor 1 1 Pristine Robot Brainstorm Bulb 2 1 Reinforced Robot Emotion Detector 32 1 Reinforced Robot Humor Supression Pump 45 1 Reinforced Robot Bomb Stabilizer 39 1 Battle-Worn Robot Taunt Processor 69 1 Battle-Worn Robot KB-808 78 1 Battle-Worn Robot Money Furnace 109

---

不确定这是否能回答您的问题，但我发现您将

tipo

包含在您的group by子句中，这将导致记录被拆分，因为根据您的信息，“Mann Co.Supply Crate Key”的

tipo

可以为0或1。这将按照

0曼恩公司供应板条箱钥匙

和第二组

1曼恩公司供应板条箱钥匙

对他们进行分组

编辑：查看您的查询，您可能需要以下内容：

select  
            it.itemname as item,
            sum(case when resi.tipo = 0 then resi.quantity else 1 end) as qty_0,
            sum(case when resi.tipo = 1 then resi.quantity else 0 end) as qty_1
from    Reserve as res inner join
            ReserveItems as resi on res.id_reserve = resi.id_reserve inner join
            Items as it on resi.defindex = it.defindex
where   res.situacao = 3
group by it.itemname
order by tipo, it.id

请记住，如果不知道表的结构，就有点困难：）

没有临时表？好的，@temp变量或派生表，甚至是一个CTE，在进行透视之前进行分组。

select  it.itemname as item,
            sum(case when res.tipo = 0 then resi.quantity else 0 end) as qt_compra,
            sum(case when res.tipo = 1 then resi.quantity else 0 end) as qt_venda
from    Reserve as res inner join
            ReserveItems as resi on res.id_reserve = resi.id_reserve inner join
            Items as it on resi.defindex = it.defindex
where   res.situacao = 3
group by it.id, it.itemname
order by it.id

select  
            it.itemname as item,
            sum(case when resi.tipo = 0 then resi.quantity else 1 end) as qty_0,
            sum(case when resi.tipo = 1 then resi.quantity else 0 end) as qty_1
from    Reserve as res inner join
            ReserveItems as resi on res.id_reserve = resi.id_reserve inner join
            Items as it on resi.defindex = it.defindex
where   res.situacao = 3
group by it.itemname
order by tipo, it.id