當被調用的第二個參數的區間形式,ADDDATE()是DATE_ADD()的同義詞。相關功能SUBDATE()是DATE_SUB()的代名詞。對于區間上的單元參數的詳細信息,請參閱DATE_ADD()的說明。
- mysql> SELECT DATE_ADD('1998-01-02', INTERVAL 31 DAY);
- +---------------------------------------------------------+
- | DATE_ADD('1998-01-02', INTERVAL 31 DAY) |
- +---------------------------------------------------------+
- | 1998-02-02 |
- +---------------------------------------------------------+
- 1 row in set (0.00 sec)
- mysql> SELECT ADDDATE('1998-01-02', INTERVAL 31 DAY);
- +---------------------------------------------------------+
- | ADDDATE('1998-01-02', INTERVAL 31 DAY) |
- +---------------------------------------------------------+
- | 1998-02-02 |
- +---------------------------------------------------------+
- 1 row in set (0.00 sec)
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