Get the Subtotal, Total using Group By with Rollup in SQL Server

In Microsoft SQL Server normally when you use aggregation function you must use Group By clause to get the Total/Average So on. But by using Group by you can get the aggregation only (Total/Avg…etc) based on the columns which you are giving in Group By clause.

But if you want get the subtotals; you can use rollup clause with Group By clause.

Rollup clause would give the subtotal specified columns whatever you mentioned in group by clause.

In the shown example, I need to get the total and subtotal of NoofBooks based on BCode and NoofLeaves but I can only get total based on those columns if I use Group By clause only. For that I can use rollup clause with Group By clause.

When we use rollup clause it would give total of NoofBooks for each BCode and NoofLeaves, subtotal for each BCode and Grand Total of NoOfBooks

Here you can notice that when its give the subtotal for each BCode, NoofLeaves columns filled NULL values as it does not have any values to return. But we can avoid showing as NULL.

(I will explain in next post).


The SQL Query for this,


select BCode, NoofLeaves,SUM(NoofBooks) TTL_Books

from ChequeDetails

where jobno='1214200644619 '

group by BCode,NoofLeaves

with rollup

order by BCode,NoofLeaves




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