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28 lines
1.2 KiB
Transact-SQL
28 lines
1.2 KiB
Transact-SQL
/*
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Customer who bought this also bought this
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Using graph tables
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Using regular tables
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*/
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-- using graph tables
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SELECT DISTINCT s2.StockItemName
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FROM Graph.StockItems AS s1, Graph.OrderLines_CustomersToStockItems, Graph.Customers, Graph.OrderLines_StockItemsToCustomers, Graph.StockItems AS s2
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WHERE MATCH (s1 - (OrderLines_StockItemsToCustomers) -> Customers and Customers - (OrderLines_CustomersToStockItems) -> s2)
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and s1.StockItemName = 'Chocolate frogs 250g'
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ORDER BY s2.StockItemName
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go
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-- using regular tables
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SELECT DISTINCT s2.StockItemName
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FROM (select StockItemID, StockItemName FROM Warehouse.StockItems ) AS s1
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join (select StockItemID, OrderID FROM Sales.OrderLines) AS q1 ON q1.StockItemID = s1.StockItemID
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join (select OrderID, CustomerID FROM Sales.Orders) AS q2 ON q1.OrderID = q2.OrderID
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join (select CustomerID, OrderID FROM Sales.Orders) AS q3 ON q2.CustomerID = q3.CustomerID
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join (select OrderID, StockItemID FROM Sales.Orderlines) AS q4 ON q3.OrderID = q4.OrderID
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join (select StockItemID, StockItemName FROM Warehouse.StockItems ) AS s2 ON q4.StockItemID = s2.StockItemID
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WHERE s1.StockItemName = 'Chocolate frogs 250g'
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ORDER BY s2.StockItemName
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go
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