1
我有一個表的類型是日期時間的列表。我只是想用兩個查詢,這是爲日期時間的日期時間的日期時間鑄造日期不反映在輸出
select cast(attendance_student.created_date as date) from attendance_student
select date(attendance_student.created_date) from attendance_student
它轉換爲日期,但我越來越輸出
7/16/2015 12:00:00 AM
7/16/2015 12:00:00 AM
7/16/2015 12:00:00 AM
7/16/2015 12:00:00 AM
7/16/2015 12:00:00 AM
7/16/2015 12:00:00 AM
7/16/2015 12:00:00 AM
7/16/2015 12:00:00 AM
爲什麼既能時代我沒有得到日期格式的輸出。
這裏是我的表腳本
CREATE TABLE `attendance_student` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`attendance_id` int(11) DEFAULT NULL,
`is_present` tinyint(1) DEFAULT '1',
`created_by` varchar(50) DEFAULT NULL,
`created_date` datetime DEFAULT NULL,
`modified_by` varchar(50) DEFAULT NULL,
`last_modified_date` datetime DEFAULT NULL,
`is_on_leave` tinyint(1) DEFAULT NULL,
`student_id` int(11) DEFAULT NULL,
`is_cocurricular_leave` tinyint(1) DEFAULT '0',
`is_activity_attendance` tinyint(1) DEFAULT '0',
`activity_id` int(11) DEFAULT NULL,
`is_sms_sent` tinyint(2) DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `idx_attendance_attendance_student` (`attendance_id`) USING BTREE,
KEY `id_student_attendance_student` (`student_id`) USING BTREE,
KEY `fk_activity_student_attendance_id` (`activity_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;