SQL Tip: Creating a Grand Total (and additional subtotals)

This was originally created in 2011/2012 in a series I dubbed “SQL Tips” for my team (via email and an internal blog site). I’ve decided to add these SQL Tips to my external blog. These are being posted exactly how they were written ~6 years ago…unless I found someone’s name being called out…I may have edited that to protect the innocent.

Sometimes when you write a query to find some totals by a particular category you’d also like to see the grand total. If your query is being used in a reporting services report then this is easily achieved within the report. However, if you’re just writing a T-SQL query to find this data you’ll be interested in some ‘GROUP BY’ functions. In this SQL Tip we’ll look at the CUBE & ROLLUP functions.

SELECT  sit.SMS_Assigned_Sites0 AS [Assigned Site]
       ,COUNT(sis.ResourceID)   AS [Number of Clients]
  FROM dbo.v_R_System_valid sis
       INNER JOIN dbo.v_RA_System_SMSAssignedSites sit
          ON sis.ResourceID = sit.ResourceID
 GROUP BY sit.SMS_Assigned_Sites0;
GO

SELECT  sit.SMS_Assigned_Sites0 AS [Assigned Site]
       ,COUNT(sis.ResourceID)   AS [Number of Clients]
  FROM dbo.v_R_System_valid sis
       INNER JOIN dbo.v_RA_System_SMSAssignedSites sit
          ON sis.ResourceID = sit.ResourceID
 GROUP BY CUBE (sit.SMS_Assigned_Sites0); -- In this example "ROLLUP" would work exactly the same
GO

SELECT  sit.SMS_Assigned_Sites0 AS [Assigned Site]
       ,sis.Is_Virtual_Machine0
       ,COUNT(sis.ResourceID)   AS [Number of Clients]
  FROM dbo.v_R_System_valid sis
       INNER JOIN dbo.v_RA_System_SMSAssignedSites sit
          ON sis.ResourceID = sit.ResourceID
         AND sit.SMS_Assigned_Sites0 IN (N'EU1',N'RD2') -- Add this to show fewer records for the example
 GROUP BY  sit.SMS_Assigned_Sites0
          ,sis.Is_Virtual_Machine0;
GO

SELECT  sit.SMS_Assigned_Sites0 AS [Assigned Site]
       ,sis.Is_Virtual_Machine0
       ,COUNT(sis.ResourceID)   AS [Number of Clients]
  FROM dbo.v_R_System_valid sis
       INNER JOIN dbo.v_RA_System_SMSAssignedSites sit
          ON sis.ResourceID = sit.ResourceID
         AND sit.SMS_Assigned_Sites0 IN (N'EU1',N'RD2') -- Add this to show fewer records for the example
 GROUP BY CUBE ( sit.SMS_Assigned_Sites0
                ,sis.Is_Virtual_Machine0
                );
GO

SELECT  sit.SMS_Assigned_Sites0 AS [Assigned Site]
       ,sis.Is_Virtual_Machine0
       ,COUNT(sis.ResourceID)   AS [Number of Clients]
  FROM dbo.v_R_System_valid sis
       INNER JOIN dbo.v_RA_System_SMSAssignedSites sit
          ON sis.ResourceID = sit.ResourceID
         AND sit.SMS_Assigned_Sites0 IN (N'EU1',N'RD2') -- Add this to show fewer records for the example
 GROUP BY ROLLUP ( sit.SMS_Assigned_Sites0
                  ,sis.Is_Virtual_Machine0
                  );
GO

 GROUP BY  ROLLUP (sit.SMS_Assigned_Sites0)
          ,ROLLUP (sis.Is_Virtual_Machine0);
GO