C# + LINQ - inner join - sql

Question

Table: one
Column (PK): employee_ssn
Column: employee_active bit
Table: two
Column (pk): date
Column (FK): employee_ssn
Column: total_income
Column: total_expenses
Working Linq code to sum total_income and total_expenses for the year, per employee:
var SumOfSections = db.two
.Select(x => x)
.Where(x => x.employee_ssn.Equals(xxxxxxxxx))
.Where(x => x.Date.Year.Equals(year))
.GroupBy(x => x.Date)
.Select(g => new
{
Total_Income = g.Sum(x => x.total_expenses),
Total_Expenses= g.Sum(x => x.total_income)
})
.ToArray();
I need to incorporate INNER JOIN to the above to only include active employees. Working SQL:
select two.total_income,total_expenses
from two
INNER JOIN one
ON one.SSN = two.SSN
WHERE one.Active = 1 AND two.Date='1/1/2014' AND two.SSN='xxxxxxxxx';
How can I modify my linq code to what my sql code is doing?

Answer 1

var SumOfSections = (from t in db.two
join o in db.one on t.employee_ssn equald o.employee_ssn
where t.employee_ssn = "xxxxxxxxx" && o.employee_active == true
group t by t.date into g
select new {
Total_Income = g.Sum(x => x.total_expenses),
Total_Expenses= g.Sum(x => x.total_income)
}).ToArray();
I used query syntax because it seems to be more readable.

Answer 2

You can also continue with the notation you are using:
var SumOfSections = db.two.Join(db.one, o=>o.employee_ssn, t=>t.employee_ssn, (o,t)=>new {One = o, Two = t)
.Select(x => x)
.Where(x => x.Two.employee_ssn.Equals(""))
.Where(x => x.Two.date.Year.Equals(1234))
.Where(x=> x.One.employee_active == true)
.GroupBy(x => x.Two.date)
.Select(g => new
{
Total_Income = g.Sum(x => x.Two.total_expenses),
Total_Expenses = g.Sum(x => x.Two.total_income)
})
.ToArray();