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Window Functions in MS SQL Server

Introduction
ROWS
RANGE
16. Range – practice 1
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Summary

Instruction

Great! OK, three more exercises before we move on.

Exercise

For each StockChange, show Id, ProductId, Quantity, ChangedDate and the total quantity change from all StockChange for that product. Name the column SumQuantity.

Stuck? Here's a hint!

Use: RANGE CURRENT ROW.

In OVER() use ORDER BY ProductId ASC.