Hi,
I am curious why months_between doesn't work when used as a filter in a query.
Look at the following example which works correctly.
```
SELECT
DAY,
MONTHS_BETWEEN (SYSDATE,DAY) as diff
FROM TABLE
WHERE CHANNEL LIKE '%LCM%'
AND MONTH = '2015-09'
GROUP BY DAY
```
The following is not working.
```
SELECT
DAY
FROM TABLE
WHERE CHANNEL LIKE '%LCM%'
AND MONTHS_BETWEEN (SYSDATE,DAY) >=2
```
Do you know why?