如何使用MySQL LIMIT订购记录并获取一些记录?
让我们首先创建一个表-
mysql> create table DemoTable679(FirstName varchar(100));
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable679 values('John'); mysql> insert into DemoTable679 values('Chris'); mysql> insert into DemoTable679 values('David'); mysql> insert into DemoTable679 values('Bob'); mysql> insert into DemoTable679 values('Mike'); mysql> insert into DemoTable679 values('Sam'); mysql> insert into DemoTable679 values('Robert');
使用select语句显示表中的所有记录-
mysql> select *from DemoTable679;
这将产生以下输出-
+-----------+ | FirstName | +-----------+ | John | | Chris | | David | | Bob | | Mike | | Sam | | Robert | +-----------+ 7 rows in set (0.00 sec)
以下是查询以选择MySQL中的最后n行。在这里,我们首先在ASC中对其进行排序,并显示前4条记录-
mysql> select * from DemoTable679 order by FirstName Limit 0,4;
这将产生以下输出-
+-----------+ | FirstName | +-----------+ | Bob | | Chris | | David | | John | +-----------+ 4 rows in set (0.00 sec)