如何在 MySQL 中按 ID 排序最后 5 条记录
mysqlmysqli database
您可以使用子查询来实现这一点。让我们首先创建一个表 −
mysql> create table DemoTable ( Id int ); Query OK, 0 rows affected (0.68 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable values(100); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values(115); Query OK, 1 row affected (0.32 sec) mysql> insert into DemoTable values(200); Query OK, 1 row affected (0.28 sec) mysql> insert into DemoTable values(140); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values(124); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(198); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable values(156); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values(178); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable values(156); Query OK, 1 row affected (0.43 sec)
以下是使用 select 语句显示表中的所有记录的查询 −
mysql> select *from DemoTable;
这将产生以下输出 −
+------+ | Id | +------+ | 100 | | 115 | | 200 | | 140 | | 124 | | 198 | | 156 | | 178 | | 156 | +------+ 9 rows in set (0.00 sec)
以下查询按 ID 排序获取最后 5 条记录 −
mysql> select *from(select *from DemoTable order by Id DESC limit 5)tbl order by Id;
这将产生以下输出 −
+------+ | Id | +------+ | 156 | | 156 | | 178 | | 198 | | 200 | +------+ 5 rows in set (0.00 sec)
