格式化 MySQL 日期並轉換為年-月-日
我們先建立一個表格 -
mysql> create table DemoTable666(AdmissionDate varchar(200)); Query OK, 0 rows affected (0.57 sec)
使用 insert 命令在表格中插入一些記錄 -
mysql> insert into DemoTable666 values('Sat,20 Jul 2019 04:29:35'); Query OK, 1 row affected (1.12 sec) mysql> insert into DemoTable666 values('Fri,02 Oct 2018 12:19:15'); Query OK, 1 row affected (1.05 sec) mysql> insert into DemoTable666 values('Sun,01 Aug 2016 11:10:05'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable666 values('Fri, 06 Nov 2015 04:06:05 -0500'); Query OK, 1 row affected (0.24 sec)
使用 select 語句顯示錶格中的所有記錄 -
mysql> select *from DemoTable666;
這將生成以下輸出 -
+---------------------------------+ | AdmissionDate | +---------------------------------+ | Sat,20 Jul 2019 04:29:35 | | Fri,02 Oct 2018 12:19:15 | | Sun,01 Aug 2016 11:10:05 | | Fri, 06 Nov 2015 04:06:05 -0500 | +---------------------------------+ 4 rows in set (0.00 sec)
以下是將上述日期格式轉換為年-月-日的查詢 -
mysql> select DATE_FORMAT(STR_TO_DATE(AdmissionDate, '%a, %d %b %Y %H:%i:%S'),'%Y-%m-%d %H:%i:%s') AS MyDate from DemoTable666;
這將生成以下輸出 -
+---------------------+ | MyDate | +---------------------+ | 2019-07-20 04:29:35 | | 2018-10-02 12:19:15 | | 2016-08-01 11:10:05 | | 2015-11-06 04:06:05 | +---------------------+ 4 rows in set, 1 warning (0.00 sec)
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