v.20.3Bug Fix

Fix Exception for JOIN Queries with Zero Rows in ClickHouse

Fix possible exception Got 0 in totals chunk, expected 1 on client. It happened for queries with JOIN in case if right joined table had zero rows. Example: select * from system.one t1 join system.one t2 on t1.dummy = t2.dummy limit 0 FORMAT TabSeparated;. Fixes #9777. #9823 (Nikolai Kochetov).