Rank countries on air pollution, from lowest to highest.Ī sales report that uses ranking might look similar to the following:
Rank countries based on their per-capita GDP (income per person), from highest to lowest. Rank salespeople on revenue (sales), from highest to lowest. The values of the other rows in the window passed to the function. The individual row passed to the function. Row, or expressions based on the columns in the row), but also a window of rows.
The RANK function returns a positive integer value between 1 and the number of rows in the window (inclusive).Īs with any other window function, when a rank-related function is called, you explicitly pass it not only a row (or more precisely, 1 or more columns of a Rank-related functions are always order-sensitive functions, and require the ORDER BY sub-clause of the OVER() clause. In the window (1, 2, 3, etc.) represent the profitability of the stores (most profitable, second most profitable, third most profitable, etc.). Profitability of individual stores within a chain of stores, and if the rows are sorted in descending order of profitability, then the ranks of the rows For example, if the rows in a window contain information about the Window of rows that has already been sorted according to a useful criterion. To be useful, a rank-related function must be called on a A rank-related function indicates the rank (position) of the current row within the window.
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