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Legal Studies根據 value 首先選擇條目，然後根據 MySQL 中其餘記錄的時間順序排列
使用 ORDER BY 固定記錄，然後顯示
select * from yourTableName order by yourColumnName1=yourValue desc,yourColumnName2;
我們首先建立一個表 −
mysql> create table DemoTable1932 ( UserName varchar(20), ShippingDate date ); Query OK, 0 rows affected (0.00 sec)
使用插入命令在表中插入一些記錄 −
mysql> insert into DemoTable1932 values('Chris','2018-10-12');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1932 values('David','2019-04-11');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1932 values('Mike','2016-12-04');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1932 values('Carol','2017-12-26');
Query OK, 1 row affected (0.00 sec)使用選擇語句從表中顯示所有記錄 −
mysql> select * from DemoTable1932;
這將產生以下輸出 −
+----------+--------------+ | UserName | ShippingDate | +----------+--------------+ | Chris | 2018-10-12 | | David | 2019-04-11 | | Mike | 2016-12-04 | | Carol | 2017-12-26 | +----------+--------------+ 4 rows in set (0.00 sec)
以下是根據 value 首先選擇條目，然後根據日期訂製條目順序的查詢 −
mysql> select * from DemoTable1932 order by UserName='David' desc,ShippingDate;
這將產生以下輸出 −
+----------+--------------+ | UserName | ShippingDate | +----------+--------------+ | David | 2019-04-11 | | Mike | 2016-12-04 | | Carol | 2017-12-26 | | Chris | 2018-10-12 | +----------+--------------+ 4 rows in set (0.00 sec)
更新於： 2019 年 12 月 30 日
314 次瀏覽
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