Question

I have main table called ‘Employee’ and another slave table called ‘EmployeeTypes’ that has a FK from ‘Employee’.

Each row in ‘Employee’ can have zero or many rows in ‘EmployeeTypes’ and I want to make an SQL Query that returns data of all Employees and each employee row should contain its related data in ‘EmployeeTypes’ (for example column called ‘TypeID’) as a comma separated list, like this:

Meco Beco ---    45   ---- 1,2,3

Answer 1

You can do this by combining a UDF that uses the Coalese method of generating a CSV list, with your standard sql statement.

The udf will look something like:

create function ConcatEmployeeTypes(@employeeid int)
returns varchar(max)
as
begin

declare @result varchar(max)

select @result = coalesce(@result + ', ', '') + employeeType
from employeeTypes
where employeeId = @employeeid

return @result

end

You then can simply call the udf like so:

select employeename, dbo.ConcatEmployeeTypes(employeeid)
from Employees