1

次のコードを使用して、会社名 = Best Baths の顧客が注文したすべてのアイテムを表示できるクエリを作成しました。

Select co.OrderID, cu.FName + '  ' + cu.SName as 'Name', 
cu.Address1 + ', ' + cu.Address2 + ', ' + cu.Address3 as 'Dispatch Address', 
cu.PostCode, 
ma.MaterialName as 'Item',
mi.Price as 'Item Price',
co.DateOrdered as 'Order Date',
pm.DateReceived,

CASE WHEN la.Status = 'Blocked' THEN 'Blocked' ELSE 'Active' END AS Status

from Customers cu
-- inner join the following to find customers orders and cost
inner join CustomerOrder co on co.CustomerID = cu.CustomerID
inner join ItemOrder io on co.ID = io.ItemOrderID
inner join materialItem mi on io.MaterialID = mi.MaterialItemID
inner join Material ma on io.MaterialID = ma.MaterialItemID
left join ItemForInvoice ifi on io.ItemOrderID = ifi.ItemOrderID
left join Invoice iv on ifi.InvoiceItemID = iv.InvoiceItemID
left join PaymentMethod pm on iv.InvoiceID = pm.InvoiceID
left join LockedAccount la on pm.PaymentID = la.PaymentID
inner join Suppliers su on mi.SupplierID = su.SuppliersID
inner join SupplierDetails sd on su.SuppliersID = sd.SuppliersID
Where su.SuppliersName = 'Best Baths'

まだ注文されていないアイテムを表示するクエリを作成したいのですが、誰かが私を正しい方向に向けることができますか?

4

3 に答える 3

2

Annoscia、この例を見てください：

(SELECT coll FROM TableA)
EXCEPT
(SELECT coll FROM TableB)

それじゃ意地悪だね：

SELECT DISTINCT coll
  FROM TableA 
 WHERE NOT EXISTS (SELECT * 
                     FROM TableB 
                    WHERE TableA.col1 = TableB.col1)

あなたの場合は次のようになります。

Select co.OrderID, cu.FName + '  ' + cu.SName as 'Name', 
cu.Address1 + ', ' + cu.Address2 + ', ' + cu.Address3 as 'Dispatch Address', 
cu.PostCode, 
ma.MaterialName as 'Item',
mi.Price as 'Item Price',
co.DateOrdered as 'Order Date',
pm.DateReceived,    
CASE WHEN la.Status = 'Blocked' THEN 'Blocked' ELSE 'Active' END AS Status

from Customers cu
-- inner join the following to find customers orders and cost
inner join CustomerOrder co on co.CustomerID = cu.CustomerID
inner join ItemOrder io on co.ID = io.ItemOrderID
inner join materialItem mi on io.MaterialID = mi.MaterialItemID
inner join Material ma on io.MaterialID = ma.MaterialItemID
left join ItemForInvoice ifi on io.ItemOrderID = ifi.ItemOrderID
left join Invoice iv on ifi.InvoiceItemID = iv.InvoiceItemID
left join PaymentMethod pm on iv.InvoiceID = pm.InvoiceID
left join LockedAccount la on pm.PaymentID = la.PaymentID
inner join Suppliers su on mi.SupplierID = su.SuppliersID
inner join SupplierDetails sd on su.SuppliersID = sd.SuppliersID

EXCEPT

Select co.OrderID, cu.FName + '  ' + cu.SName as 'Name', 
cu.Address1 + ', ' + cu.Address2 + ', ' + cu.Address3 as 'Dispatch Address', 
cu.PostCode, 
ma.MaterialName as 'Item',
mi.Price as 'Item Price',
co.DateOrdered as 'Order Date',
pm.DateReceived,

CASE WHEN la.Status = 'Blocked' THEN 'Blocked' ELSE 'Active' END AS Status

from Customers cu
-- inner join the following to find customers orders and cost
inner join CustomerOrder co on co.CustomerID = cu.CustomerID
inner join ItemOrder io on co.ID = io.ItemOrderID
inner join materialItem mi on io.MaterialID = mi.MaterialItemID
inner join Material ma on io.MaterialID = ma.MaterialItemID
left join ItemForInvoice ifi on io.ItemOrderID = ifi.ItemOrderID
left join Invoice iv on ifi.InvoiceItemID = iv.InvoiceItemID
left join PaymentMethod pm on iv.InvoiceID = pm.InvoiceID
left join LockedAccount la on pm.PaymentID = la.PaymentID
inner join Suppliers su on mi.SupplierID = su.SuppliersID
inner join SupplierDetails sd on su.SuppliersID = sd.SuppliersID
Where su.SuppliersName = 'Best Baths'
于 2012-11-28T08:41:39.237 に答える
2

どのテーブルが何なのか、クエリからは明らかではありませんが、基本的なクエリは次のようになります

SELECT items.id, COUNT(orders.itemid) AS cnt
FROM items
LEFT JOIN orders ON items.id = orders.itemid
GROUP BY items.id
HAVING (cnt = 0)
于 2012-11-27T20:44:37.457 に答える