Question

I am using aggregate function in SQL query and I want the result in linq to sql.

My Query is :

 string sql = "Select sum(e.Salary) as 'TotalSalary' from Employee e";

and I am using LinqToSql to get the TotalSalary.

IEnumarable result = DBContext.ExecuteQuery(sql);

How can I get the “TotalSalary” from result?

Answer 1

If you are using Linq2Sql, you could simply do:

var totalSalary = DBContext.Employee.Sum(e => e.Salary)

Or, using the custom SQL approach, this is how it could work:

string sql = "Select sum(e.Salary) from Employee e";
var totalSalary = DBContext.ExecuteQuery<decimal>(sql).Single();

(adjust decimal to your actual data type if needed)