回绕到第一个值并在单个查询中实现 MySQL ORDER BY ASC 和 DESC

我们首先创建一个表 -

mysql> create table DemoTable
   -> (
   -> Value int
   -> );
Query OK, 0 rows affected (3.21 sec)

使用 insert 命令在表中插入一些记录 -

mysql> insert into DemoTable values(20);
Query OK, 1 row affected (0.78 sec)
mysql> insert into DemoTable values(40);
Query OK, 1 row affected (0.94 sec)
mysql> insert into DemoTable values(30);
Query OK, 1 row affected (0.41 sec)
mysql> insert into DemoTable values(10);
Query OK, 1 row affected (0.26 sec)
mysql> insert into DemoTable values(90);
Query OK, 1 row affected (0.21 sec)
mysql> insert into DemoTable values(70);
Query OK, 1 row affected (0.49 sec)
mysql> insert into DemoTable values(80);
Query OK, 1 row affected (0.23 sec)
mysql> insert into DemoTable values(9);
Query OK, 1 row affected (0.23 sec)
mysql> insert into DemoTable values(8);
Query OK, 1 row affected (0.38 sec)

使用 select 语句从表中显示所有记录 -

mysql> select *from DemoTable ;

这将产生以下输出 -

+-------+
| Value |
+-------+
|    20 |
|    40 |
|    30 |
|    10 |
|    90 |
|    70 |
|    80 |
|     9 |
|     8 |
+-------+
9 rows in set (0.00 sec)

以下是将“回绕”到第一个值并在单个查询中实现 ORDER BY ASC 和 DESC 的查询 -

mysql> select *from DemoTable
   -> order by Value > 10 desc,Value asc;

这将产生以下输出 -

+-------+
| Value |
+-------+
|    20 |
|    30 |
|    40 |
|    70 |
|    80 |
|    90 |
|     8 |
|     9 |
|    10 |
+-------+
9 rows in set (0.00 sec)

AmitDiwan

更新日期： 13-Dec-2019

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