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显示来自MySQL表的随机行

2024-04-26 00:50:05 317

要显示单个随机行，请RAND()与LIMIT一起使用。此处，LIMIT用于获取记录数，因为我们只需要一行，因此请使用LIMIT1。让我们首先创建一个表-

mysql> create table DemoTable
(
   Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   Name varchar(50),
   Quote text
);

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable(Name,Quote) values('Chris','MySQL is a relational database');
mysql> insert into DemoTable(Name,Quote) values('Robert','Java is an Object Oriented Programming Language');
mysql> insert into DemoTable(Name,Quote) values('Mike','C is a Procedural Language');
mysql> insert into DemoTable(Name,Quote) values('David','Hibernate and spring is a framework');

使用select语句显示表中的所有记录-

mysql> select *from DemoTable;

这将产生以下输出-

+----+--------+-------------------------------------------------+
| Id | Name   | Quote                                           |
+----+--------+-------------------------------------------------+
|  1 | Chris  | MySQL is a relational database                  |
|  2 | Robert | Java is an Object Oriented Programming Language |
|  3 | Mike   | C is a Procedural Language                      |
|  4 | David  | Hibernate and spring is a framework             |
+----+--------+-------------------------------------------------+
4 rows in set (0.00 sec)

以下是显示来自MySQL表的随机数的查询-

mysql> select Id,Name,Quote from DemoTable order by rand() limit 1;

这将产生以下输出-

+----+------+----------------------------+
| Id | Name | Quote                      |
+----+------+----------------------------+
|  3 | Mike | C is a Procedural Language |
+----+------+----------------------------+
1 row in set (0.00 sec)

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显示来自MySQL表的随机行

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