RANK (Transact-SQL)

 

THIS TOPIC APPLIES TO: yesSQL Server (starting with 2008)yesAzure SQL DatabaseyesAzure SQL Data Warehouse yesParallel Data Warehouse

Returns the rank of each row within the partition of a result set. The rank of a row is one plus the number of ranks that come before the row in question.

Topic link icon Transact-SQL Syntax Conventions

-- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse  
  
RANK ( ) OVER ( [ partition_by_clause ] order_by_clause )  

OVER ( [ partition_by_clause ] order_by_clause)
partition_by_clause divides the result set produced by the FROM clause into partitions to which the function is applied. If not specified, the function treats all rows of the query result set as a single group. order_by_clause determines the order of the data before the function is applied. The order_by_clause is required. The <rows or range clause> of the OVER clause cannot be specified for the RANK function. For more information, see OVER Clause (Transact-SQL).

bigint

If two or more rows tie for a rank, each tied rows receives the same rank. For example, if the two top salespeople have the same SalesYTD value, they are both ranked one. The salesperson with the next highest SalesYTD is ranked number three, because there are two rows that are ranked higher. Therefore, the RANK function does not always return consecutive integers.

The sort order that is used for the whole query determines the order in which the rows appear in a result set.

RANK is nondeterministic. For more information, see Deterministic and Nondeterministic Functions.

A. Ranking rows within a partition

The following example ranks the products in inventory the specified inventory locations according to their quantities. The result set is partitioned by LocationID and logically ordered by Quantity. Notice that products 494 and 495 have the same quantity. Because they are tied, they are both ranked one.

USE AdventureWorks2012;  
GO  
SELECT i.ProductID, p.Name, i.LocationID, i.Quantity  
    ,RANK() OVER   
    (PARTITION BY i.LocationID ORDER BY i.Quantity DESC) AS Rank  
FROM Production.ProductInventory AS i   
INNER JOIN Production.Product AS p   
    ON i.ProductID = p.ProductID  
WHERE i.LocationID BETWEEN 3 AND 4  
ORDER BY i.LocationID;  
GO  

Here is the result set.

  
ProductID   Name                   LocationID   Quantity Rank  
----------- ---------------------- ------------ -------- ----  
494         Paint - Silver         3            49       1  
495         Paint - Blue           3            49       1  
493         Paint - Red            3            41       3  
496         Paint - Yellow         3            30       4  
492         Paint - Black          3            17       5  
495         Paint - Blue           4            35       1  
496         Paint - Yellow         4            25       2  
493         Paint - Red            4            24       3  
492         Paint - Black          4            14       4  
494         Paint - Silver         4            12       5  
 (10 row(s) affected)  

B. Ranking all rows in a result set

The following example returns the top ten employees ranked by their salary. Because a PARTITION BY clause was not specified, the RANK function was applied to all rows in the result set.

USE AdventureWorks2012  
SELECT TOP(10) BusinessEntityID, Rate,   
       RANK() OVER (ORDER BY Rate DESC) AS RankBySalary  
FROM HumanResources.EmployeePayHistory AS eph1  
WHERE RateChangeDate = (SELECT MAX(RateChangeDate)   
                        FROM HumanResources.EmployeePayHistory AS eph2  
                        WHERE eph1.BusinessEntityID = eph2.BusinessEntityID)  
ORDER BY BusinessEntityID;  

Here is the result set.

BusinessEntityID Rate                  RankBySalary  
---------------- --------------------- --------------------  
1                125.50                1  
2                63.4615               4  
3                43.2692               8  
4                29.8462               19  
5                32.6923               16  
6                32.6923               16  
7                50.4808               6  
8                40.8654               10  
9                40.8654               10  
10               42.4808               9  

C: Ranking rows within a partition

The following example ranks the sales representatives in each sales territory according to their total sales. The rowset is partitioned by SalesTerritoryGroup and sorted by SalesAmountQuota.

-- Uses AdventureWorks  
  
SELECT LastName, SUM(SalesAmountQuota) AS TotalSales, SalesTerritoryRegion,  
    RANK() OVER (PARTITION BY SalesTerritoryRegion ORDER BY SUM(SalesAmountQuota) DESC ) AS RankResult  
FROM dbo.DimEmployee AS e  
INNER JOIN dbo.FactSalesQuota AS sq ON e.EmployeeKey = sq.EmployeeKey  
INNER JOIN dbo.DimSalesTerritory AS st ON e.SalesTerritoryKey = st.SalesTerritoryKey  
WHERE SalesPersonFlag = 1 AND SalesTerritoryRegion != N'NA'  
GROUP BY LastName, SalesTerritoryRegion;  

Here is the result set.

LastName TotalSales SalesTerritoryGroup RankResult

---------------- ------------- ------------------- --------

Tsoflias 1687000.0000 Australia 1

Saraiva 7098000.0000 Canada 1

Vargas 4365000.0000 Canada 2

Carson 12198000.0000 Central 1

Varkey Chudukatil 5557000.0000 France 1

Valdez 2287000.0000 Germany 1

Blythe 11162000.0000 Northeast 1

Campbell 4025000.0000 Northwest 1

Ansman-Wolfe 3551000.0000 Northwest 2

Mensa-Annan 2753000.0000 Northwest 3

Reiter 8541000.0000 Southeast 1

Mitchell 11786000.0000 Southwest 1

Ito 7804000.0000 Southwest 2

Pak 10514000.0000 United Kingdom 1

DENSE_RANK (Transact-SQL)
ROW_NUMBER (Transact-SQL)
NTILE (Transact-SQL)
Ranking Functions (Transact-SQL)
Built-in Functions (Transact-SQL)

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