mysql中的时间year/date/time/datetime

year:

mysql> create table y(y year);
Query OK, 0 rows affected (0.03 sec)

mysql> desc y;
+-------+---------+------+-----+---------+-------+
| Field | Type    | Null | Key | Default | Extra |
+-------+---------+------+-----+---------+-------+
| y     | year(4) | YES  |     | NULL    |       |
+-------+---------+------+-----+---------+-------+
1 row in set (0.00 sec)


mysql> insert into y values(1987);
Query OK, 1 row affected (0.00 sec)

mysql> select * from y;
+------+
| y    |
+------+
| 0000 |
| 0000 |
| 1987 |
+------+
3 rows in set (0.00 sec)

mysql> insert into y values(19874);
Query OK, 1 row affected, 1 warning (0.00 sec)

mysql> select * from y;
+------+
| y    |
+------+
| 0000 |
| 0000 |
| 1987 |
| 0000 |
+------+
4 rows in set (0.00 sec)

 date:

mysql> create table d(d date);
Query OK, 0 rows affected (0.02 sec)

mysql> insert into d(1);
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual th
corresponds to your MariaDB server version for the right syntax to use near '
 at line 1
mysql> insert into d values(1);
Query OK, 1 row affected, 1 warning (0.00 sec)

mysql> select * from d;
+------------+
| d          |
+------------+
| 0000-00-00 |
+------------+
1 row in set (0.00 sec)

mysql> insert into d values(10-15);
Query OK, 1 row affected, 1 warning (0.01 sec)

mysql> select * from d;
+------------+
| d          |
+------------+
| 0000-00-00 |
| 0000-00-00 |
+------------+
2 rows in set (0.00 sec)

mysql> insert into d values(2011-7-7);
Query OK, 1 row affected, 1 warning (0.00 sec)

mysql> select * from d;
+------------+
| d          |
+------------+
| 0000-00-00 |
| 0000-00-00 |
| 0000-00-00 |
+------------+
3 rows in set (0.00 sec)

mysql> insert into d values(2017-10-15);
Query OK, 1 row affected, 1 warning (0.00 sec)

mysql> select * from d;
+------------+
| d          |
+------------+
| 0000-00-00 |
| 0000-00-00 |
| 0000-00-00 |
| 0000-00-00 |
+------------+
4 rows in set (0.00 sec)

mysql> insert into d values('2011-7-7');
Query OK, 1 row affected (0.00 sec)

mysql> select * from d;
+------------+
| d          |
+------------+
| 0000-00-00 |
| 0000-00-00 |
| 0000-00-00 |
| 0000-00-00 |
| 2011-07-07 |
+------------+
5 rows in set (0.00 sec)

mysql>

 要用字符串型式插入

time:

mysql> create table t(t time);
Query OK, 0 rows affected (0.03 sec)

mysql> insert into t values(12345);
Query OK, 1 row affected (0.00 sec)

mysql> select * from t;
+----------+
| t        |
+----------+
| 01:23:45 |
+----------+
1 row in set (0.00 sec)

mysql> insert into t values(1234511111);
Query OK, 1 row affected, 1 warning (0.00 sec)

mysql> select * from t;
+----------+
| t        |
+----------+
| 01:23:45 |
| 00:00:00 |
+----------+
2 rows in set (0.00 sec)

mysql> insert into t values('09:09:09');
Query OK, 1 row affected (0.00 sec)

mysql> select * from t;
+----------+
| t        |
+----------+
| 01:23:45 |
| 00:00:00 |
| 09:09:09 |
+----------+
3 rows in set (0.00 sec)

mysql>

datetime:

mysql> create table dt(dt datetime);
Query OK, 0 rows affected (0.03 sec)

mysql> insert into dt values('2017-01-01 0:0:01');
Query OK, 1 row affected (0.00 sec)

mysql> select * from dt;
+---------------------+
| dt                  |
+---------------------+
| 2017-01-01 00:00:01 |
+---------------------+
1 row in set (0.00 sec)

mysql> insert into dt values('1234567890');
Query OK, 1 row affected, 1 warning (0.00 sec)

mysql> select * from dt;
+---------------------+
| dt                  |
+---------------------+
| 2017-01-01 00:00:01 |
| 0000-00-00 00:00:00 |
+---------------------+
2 rows in set (0.00 sec)

mysql>