讓我們創建一個表來按升序對日期和時間進行排序。創建表的查詢如下 –
mysql> create table SortByDateAndTime -> ( -> UserId int, -> UserName varchar(100), -> IssueDate date, -> IssueTime time -> ); Query OK, 0 rows affected (0.60 sec)
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使用insert命令在表中插入記錄。查詢如下 –
mysql> insert into SortByDateAndTime values(1,'John','2018-12-16','10:30'); Query OK, 1 row affected (0.14 sec) mysql> insert into SortByDateAndTime values(2,'Bob','2018-12-16','10:10'); Query OK, 1 row affected (0.14 sec) mysql> insert into SortByDateAndTime values(3,'Carol','2018-12-16','10:20'); Query OK, 1 row affected (0.10 sec) mysql> insert into SortByDateAndTime values(4,'Sam','2018-12-16','10:00'); Query OK, 1 row affected (0.15 sec)
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使用 select 語句顯示表中所有記錄的查詢如下 –
mysql> select *from SortByDateAndTime;
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輸出
+--------+----------+------------+-----------+ | UserId | UserName | IssueDate | IssueTime | +--------+----------+------------+-----------+ | 1 | John | 2018-12-16 | 10:30:00 | | 2 | Bob | 2018-12-16 | 10:10:00 | | 3 | Carol | 2018-12-16 | 10:20:00 | | 4 | Sam | 2018-12-16 | 10:00:00 | +--------+----------+------------+-----------+ 4 rows in set (0.00 sec)
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這是按降序對日期和時間進行排序的查詢 –
mysql> select UserId,UserName,date(IssueDate) as date1,IssueTime from SortByDateAndTime -> order by date(IssueDate)desc,IssueTime desc;
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以下是以排序的日期和時間顯示的輸出 –
+--------+----------+------------+-----------+ | UserId | UserName | date1 | IssueTime | +--------+----------+------------+-----------+ | 1 | John | 2018-12-16 | 10:30:00 | | 3 | Carol | 2018-12-16 | 10:20:00 | | 2 | Bob | 2018-12-16 | 10:10:00 | | 4 | Sam | 2018-12-16 | 10:00:00 | +--------+----------+------------+-----------+ 4 rows in set (0.00 sec)
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或者您可以使用另一個查詢來對日期和時間進行排序。查詢如下 –
mysql> select UserId,UserName,date(IssueDate) as date1,IssueTime from SortByDateAndTime -> order by date(IssueDate) desc,IssueTime asc;
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輸出
+--------+----------+------------+-----------+ | UserId | UserName | date1 | IssueTime | +--------+----------+------------+-----------+ | 4 | Sam | 2018-12-16 | 10:00:00 | | 2 | Bob | 2018-12-16 | 10:10:00 | | 3 | Carol | 2018-12-16 | 10:20:00 | | 1 | John | 2018-12-16 | 10:30:00 | +--------+----------+------------+-----------+ 4 rows in set (0.00 sec)
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