mysql> SELECT MICROSECOND('2010-12-10 14:12:09.019473'); : timestamp « Data Types « MySQL Tutorial






  1. MySQL Tutorial
  2. Data Types
  3. timestamp
+-------------------------------------------+
| MICROSECOND('2010-12-10 14:12:09.019473') |
+-------------------------------------------+
|                                     19473 |
+-------------------------------------------+
1 row in set (0.00 sec)

mysql>








10.24.timestamp
10.24.1.The timestamp data type stores the time that a row was last changed
10.24.2.TIMESTAMP NULL DEFAULT '0000-00-00 00:00:00'
10.24.3.TIMESTAMP NULL DEFAULT NULL
10.24.4.You can include the NULL attribute in the definition of a TIMESTAMP column to allow the column to contain NULL values. For example:
10.24.5.mysql> SELECT MICROSECOND('2010-12-10 14:12:09.019473');
10.24.6.TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP