timestamp type column default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP : TimeStamp « Data Type « SQL / MySQL

1.	Aggregate Functions
2.	Backup Load
3.	Command MySQL
4.	Cursor
5.	Data Type
6.	Database
7.	Date Time
8.	Engine
9.	Event
10.	Flow Control
11.	FullText Search
12.	Function
13.	Geometric
14.	I18N
15.	Insert Delete Update
16.	Join
17.	Key
18.	Math
19.	Procedure Function
20.	Regular Expression
21.	Select Clause
22.	String
23.	Table Index
24.	Transaction
25.	Trigger
26.	User Permission
27.	View
28.	Where Clause
29.	XML

SQL / MySQL » Data Type » TimeStamp

timestamp type column default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP

    

mysql>

mysql> CREATE TABLE categories (

    ->   id int(11) NOT NULL auto_increment,

    ->   ts timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,

    ->   PRIMARY KEY (id)

    -> );

Query OK, 0 rows affected (0.00 sec)



mysql>

mysql>

mysql>

mysql> drop table categories;

Query OK, 0 rows affected (0.00 sec)

Related examples in the same category

1.	TIMESTAMP as column type
2.	Table definition includes a YEAR column and a TIMESTAMP
3.	Order by timestamp value
4.	dates and times in SQL commands must be given as character strings,
5.	Recording a Row's Last Modification Time
6.	Recording a Row's Creation Time
7.	Performing Calculations with TIMESTAMP Values
8.	Updates to tsdemo2 records that don't actually modify a column cause no change to TIMESTAMP values
9.	Create a table in which timestamps can be stored.
10.	The difference between the creation and modification times
11.	Issuing an UPDATE statement that doesn't actually change the values in the val column doesn't update the TIMES
12.	microseconds component is removed.

java2s.com | Contact Us | Privacy Policy

All other trademarks are property of their respective owners.