如何在MySQL中将一列中的0移动到末尾并保持升序搜索顺序?
首先创建一个表 –
mysql> create table DemoTable
-> (
-> Number int
-> );
Query OK, 0 rows affected (0.58 sec)
使用插入命令在表中插入一些记录 –
mysql> insert into DemoTable values(9);
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable values(4);
Query OK, 1 row affected (0.31 sec)
mysql> insert into DemoTable values(0);
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable values(7);
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable values(11);
Query OK, 1 row affected (0.12 sec)
使用select语句显示表中的所有记录 –
mysql> select *from DemoTable
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输出
这将生成以下输出 –
+--------+
| Number |
+--------+
| 9 |
| 4 |
| 0 |
| 7 |
| 11 |
+--------+
5 rows in set (0.00 sec)
以下是使用ORDER BY查询,并将0置于末尾保持升序搜索顺序的查询 –
mysql> select *from DemoTable order by Number=0,Number;
输出
这将生成以下输出 –
+--------+
| Number |
+--------+
| 4 |
| 7 |
| 9 |
| 11 |
| 0 |
+--------+
5 rows in set (0.00 sec)
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