declare @table table
(
some_value varchar(50),
some_other_value varchar(50),
some_other_other_value varchar(50)
)
insert @table
select NULL,NULL,'easy'
union all
select NULL,'as','abc'
union all
select '123',NULL,'abc'
union all
select NULL,NULL,NULL
select coalesce(some_value,some_other_value,some_other_other_value,'Nothing there')
from @table