Time Zone Adjustments : Time zone « Date Time « SQL / MySQL

1. SQL / MySQL
2. Date Time
3. Time zone

Time Zone Adjustments

    
mysql>
mysql>
mysql> CREATE TABLE datetime_val
    -> (
    ->  dt      DATETIME
    -> );
Query OK, 0 rows affected (0.01 sec)

mysql>
mysql>
mysql> INSERT INTO datetime_val (dt) VALUES('1970-01-01 00:00:00');
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO datetime_val (dt) VALUES('1987-03-05 12:30:15');
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO datetime_val (dt) VALUES('1999-12-31 09:00:00');
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO datetime_val (dt) VALUES('2000-06-04 15:45:30');
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> SELECT * FROM datetime_val;
+---------------------+
| dt                  |
+---------------------+
| 1970-01-01 00:00:00 |
| 1987-03-05 12:30:15 |
| 1999-12-31 09:00:00 |
| 2000-06-04 15:45:30 |
+---------------------+
4 rows in set (0.00 sec)

mysql>
mysql>
mysql> SELECT dt AS 'server time',
    -> DATE_ADD(dt,INTERVAL -2 HOUR) AS 'client time'
    -> FROM datetime_val;
+---------------------+---------------------+
| server time         | client time         |
+---------------------+---------------------+
| 1970-01-01 00:00:00 | 1969-12-31 22:00:00 |
| 1987-03-05 12:30:15 | 1987-03-05 10:30:15 |
| 1999-12-31 09:00:00 | 1999-12-31 07:00:00 |
| 2000-06-04 15:45:30 | 2000-06-04 13:45:30 |
+---------------------+---------------------+
4 rows in set (0.00 sec)

mysql>
mysql> drop table datetime_val;
Query OK, 0 rows affected (0.00 sec)

   
    
    
    
  

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