In MYSQL, how do we store a date with day, month or day both being zero and day being zero?

To store dates with day, month, or month and day all equal to zero, we must set the sql mode to allow_invalid_dates mode.

mysql> set sql_mode = 'allow_invalid_dates';
Query OK, 0 rows affected (0.00 sec)

mysql> insert into check_date(OrderDate) values('2017-00-00');
Query OK, 1 row affected (0.06 sec)

mysql> select * from check_date;
+-------------+
| OrderDate |
+-------------+
| 2017-00-00 |
+-------------+
1 row in set (0.00 sec)

The above query will insert dates with both month and day values ​​being zero.

mysql> insert into check_date(Orderdate) values ('2017-00-05');
Query OK, 1 row affected (0.07 sec)

mysql> select * from check_date;
+------------+
| Orderdate  |
+------------+
| 2017-00-00 |
| 2017-00-05 |
+------------+
2 rows in set (0.00 sec)

The above query will insert dates with a month value of zero.

mysql> insert into check_date(Orderdate) values ('2017-05-00');
Query OK, 1 row affected (0.02 sec)

mysql> select * from check_date;
+------------+
| Orderdate  |
+------------+
| 2017-00-00 |
| 2017-00-05 |
| 2017-05-00 |
+------------+
3 rows in set (0.00 sec)

The above query will insert dates with a date value of zero.

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