Write a SQL query to find all numbers that appear at least three times consecutively.
+----+-----+ | Id | Num | +----+-----+ | 1 | 1 | | 2 | 1 | | 3 | 1 | | 4 | 2 | | 5 | 1 | | 6 | 2 | | 7 | 2 | +----+-----+
For example, given the above Logs table, 1 is the only number that appears consecutively for at least three times.
+-----------------+ | ConsecutiveNums | +-----------------+ | 1 | +-----------------+
select distinct(Num) as ConsecutiveNums from Logs Curr where
Num = (select Num from Logs where id = Curr.id - 1) and
Num = (select Num from Logs where id = Curr.id - 2)