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如何从MySQL数据库中选择随机记录？

2024-05-11 07:19:03 483

为此，您可以使用ORDERBYRANDLIMIT。让我们首先创建一个表-

mysql> create table DemoTable1581
   -> (
   -> StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   -> StudentName varchar(20)
   -> );

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable1581(StudentName) values('Chris');
mysql> insert into DemoTable1581(StudentName) values('Bob');
mysql> insert into DemoTable1581(StudentName) values('Sam');
mysql> insert into DemoTable1581(StudentName) values('Mike');
mysql> insert into DemoTable1581(StudentName) values('Carol');

使用select语句显示表中的所有记录-

mysql> select * from DemoTable1581;

这将产生以下输出-

+-----------+-------------+
| StudentId | StudentName |
+-----------+-------------+
|         1 | Chris       |
|         2 | Bob         |
|         3 | Sam         |
|         4 | Mike        |
|         5 | Carol       |
+-----------+-------------+
5 rows in set (0.00 sec)

这是从MySQL数据库中选择随机记录的查询-

mysql> select * from DemoTable1581 order by rand() limit 1;

这将产生以下输出-

+-----------+-------------+
| StudentId | StudentName |
+-----------+-------------+
|         4 | Mike        |
+-----------+-------------+
1 row in set (0.07 sec)

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如何从MySQL数据库中选择随机记录？

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