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

You can;

LEFT(SourceOfBooking, CHARINDEX(' (', SourceOfBooking + ' (') - 1)

(Remove + ' (' if needed; it allows for rows with no  (