首先使用MySQL ORDER BY设置某个值？
让我们首先创建一个表-
mysql> create table DemoTable -> ( -> Number int -> );
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values(10); mysql> insert into DemoTable values(20); mysql> insert into DemoTable values(12); mysql> insert into DemoTable values(14); mysql> insert into DemoTable values(19); mysql> insert into DemoTable values(45); mysql> insert into DemoTable values(56); mysql> insert into DemoTable values(103); mysql> insert into DemoTable values(87); mysql> insert into DemoTable values(98);
使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
输出结果
这将产生以下输出-
+--------+ | Number | +--------+ | 10 | | 20 | | 12 | | 14 | | 19 | | 45 | | 56 | | 103 | | 87 | | 98 | +--------+ 10 rows in set (0.00 sec)
以下是首先使用ORDERBY查询特定值的查询-
mysql− select *from DemoTable order by (Number=45) DESC,Number;
输出结果
这将产生以下输出-
+--------+ | Number | +--------+ | 45 | | 10 | | 12 | | 14 | | 19 | | 20 | | 56 | | 87 | | 98 | | 103 | +--------+ 10 rows in set (0.00 sec)