Accepts a DateTime, DateOnly, or legacy Date object as input. Returns an object of the same type that corresponds to the last day of the month that contains the specified date.
Example
SELECT OrderDate as "date", month_last_day(OrderDate) as "month_last_day" FROM "dates_sample_data";
| date | month_last_day |
|---|---|
| 2015-01-21 15:30:00 | 2015-01-31 00:00:00 |
| 2015-01-21 00:00:00 | 2015-01-31 00:00:00 |
| 2015-01-31 10:00:30 | 2015-01-31 00:00:00 |
| 2015-02-03 15:30:00 | 2015-02-28 00:00:00 |
| 2016-01-21 23:59:59 | 2016-01-31 00:00:00 |
| 2015-10-31 23:59:59 | 2015-10-31 00:00:00 |
| 2015-12-03 00:00:00 | 2015-12-31 00:00:00 |
| 2016-01-11 03:30:00 | 2016-01-31 00:00:00 |
| 2016-01-11 03:30:00 | 2016-01-31 00:00:00 |