SQL string manipulation [Get all text left of '(']

Question

I have some data which looks like so:

SourceOfBooking
----------------
Company1 (Foo)
Company2 (Bar)
Company3 (Foo1)
Company4 (Foo2)

I am l

Answer 1

I think you've just put a wrong character

case
    when CHARINDEX('(', SourceOfBooking) > 0 then
        rtrim(left(SourceOfBooking, CHARINDEX('(', SourceOfBooking) - 1))
    else
        SourceOfBooking
end