timestampdiff

timestampdiff

説明

datetime_expr2からdatetime_expr1までの時間間隔を返します。datetime_expr1およびdatetime_expr2はDATEまたはDATETIME型である必要があります。

整数の結果および時間間隔の単位は、次のいずれかである必要があります。

SECOND、MINUTE、HOUR、DAY、WEEK、MONTH、またはYEAR。

構文

INT TIMESTAMPDIFF(unit, DATETIME datetime_expr1, DATETIME datetime_expr2)

例

MySQL> SELECT TIMESTAMPDIFF(MONTH,'2003-02-01','2003-05-01');
+--------------------------------------------------------------------+
| timestampdiff(MONTH, '2003-02-01 00:00:00', '2003-05-01 00:00:00') |
+--------------------------------------------------------------------+
|                                                                  3 |
+--------------------------------------------------------------------+

MySQL> SELECT TIMESTAMPDIFF(YEAR,'2002-05-01','2001-01-01');
+-------------------------------------------------------------------+
| timestampdiff(YEAR, '2002-05-01 00:00:00', '2001-01-01 00:00:00') |
+-------------------------------------------------------------------+
|                                                                -1 |
+-------------------------------------------------------------------+

MySQL> SELECT TIMESTAMPDIFF(MINUTE,'2003-02-01','2003-05-01 12:05:55');
+---------------------------------------------------------------------+
| timestampdiff(MINUTE, '2003-02-01 00:00:00', '2003-05-01 12:05:55') |
+---------------------------------------------------------------------+
|                                                              128885 |
+---------------------------------------------------------------------+

キーワード

TIMESTAMPDIFF