ROW NUMBER() OVER

Question

I came across a somewhat special syntax, could you help in figuring out what it means? Thank you.

SELECT ROW NUMBER() OVER (ORDER BY Product.ProductID) FROM          


        

Answer 1

Note that your are missing the underscore in ROW_NUMBER

SELECT ROW_NUMBER() OVER (ORDER BY Products.ProductID) FROM Products;

What it does is that it prints out the row number of each record in the products table in the order they were retrieved (as ordered by ProductID)

e.g.
RowNumber   ProductName
------------------------
1           Flower
2           Bag
3           Car
...         ...

I added the ProductName column for clarity