Puoi usare in questo modo in Stored Procedure,
declare @searchtext varchar(1000)
set searchtext ='bob,harry,charley'
declare @filter varchar(2000)
set @filter = '(name LIKE ''%' + replace('bob,harry,charley',',','%'' OR name LIKE ''%') + '%'')'
exec
('
select *
from mytab
where ' + @filter + '
'
)