Performing Leap Year Calculations : Year « Date Time « SQL / MySQL

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SQL / MySQL » Date Time » Year 
Performing Leap Year Calculations
     
mysql>
mysql> CREATE TABLE date_val
    -> (
    ->  d       DATE
    -> );
Query OK, rows affected (0.01 sec)

mysql>
mysql> INSERT INTO date_val (dVALUES('1864-02-28');
Query OK, row affected (0.00 sec)

mysql> INSERT INTO date_val (dVALUES('1900-01-15');
Query OK, row affected (0.00 sec)

mysql> INSERT INTO date_val (dVALUES('1987-03-05');
Query OK, row affected (0.00 sec)

mysql> INSERT INTO date_val (dVALUES('1999-12-31');
Query OK, row affected (0.00 sec)

mysql> INSERT INTO date_val (dVALUES('2000-06-04');
Query OK, row affected (0.00 sec)

mysql>
mysql>
mysql> SELECT d, YEAR(d0
    -> AS "rule-of-thumb test",
    -> (YEAR(d0AND ((YEAR(d100 != 0OR (YEAR(d400 0))
    -> AS "complete test"
    -> FROM date_val;
+------------+--------------------+---------------+
| d          | rule-of-thumb test | complete test |
+------------+--------------------+---------------+
1864-02-28 |                  |             |
1900-01-15 |                  |             |
1987-03-05 |                  |             |
1999-12-31 |                  |             |
2000-06-04 |                  |             |
+------------+--------------------+---------------+
rows in set (0.00 sec)

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

mysql>

   
    
    
    
    
  
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