随机排列 MySQL 记录并以升序方式显示名称


您可以使用子查询随机排序,并按升序显示名称。rand() 用于随机,而 ORDER BY 用于按升序显示名称记录。语法如下 −

select *from
(
   select *from yourTableName order by rand() limit anyIntegerValue;
) anyVariableName
order by yourColumnName;

为了理解上述概念,让我们创建一个表。我们有一个 ID 出售以及 Name,我们希望按升序排列。创建表查询如下 −

mysql> create table OrderByRandName
   −> (
   −> Id int,
   −> Name varchar(100)
   −> );
Query OK, 0 rows affected (0.96 sec)

使用 insert 命令显示表中的所有记录。查询如下 −

mysql> insert into OrderByRandName values(100,'John');
Query OK, 1 row affected (0.18 sec)

mysql> insert into OrderByRandName values(101,'Bob');
Query OK, 1 row affected (0.11 sec)

mysql> insert into OrderByRandName values(102,'Johnson');
Query OK, 1 row affected (0.19 sec)

mysql> insert into OrderByRandName values(103,'David');
Query OK, 1 row affected (0.22 sec)

mysql> insert into OrderByRandName values(104,'Smith');
Query OK, 1 row affected (0.17 sec)

mysql> insert into OrderByRandName values(105,'Taylor');
Query OK, 1 row affected (0.20 sec)

mysql> insert into OrderByRandName values(106,'Sam');
Query OK, 1 row affected (0.12 sec)

mysql> insert into OrderByRandName values(107,'Robert');
Query OK, 1 row affected (0.22 sec)

mysql> insert into OrderByRandName values(108,'Michael');
Query OK, 1 row affected (0.16 sec)

mysql> insert into OrderByRandName values(109,'Mark');
Query OK, 1 row affected (0.17 sec)

使用 select 语句显示所有记录。查询如下 −

mysql> select *from OrderByRandName;

以下为输出 −

+------+---------+
| Id   | Name    |
+------+---------+
|  100 | John    |
|  101 | Bob     |
|  102 | Johnson |
|  103 | David   |
|  104 | Smith   |
|  105 | Taylor  |
|  106 | Sam     |
|  107 | Robert  |
|  108 | Michael |
|  109 | Mark    |
+------+---------+
10 rows in set (0.00 sec)

以下是按 rand() 排序并按升序显示名称的查询 −

mysql> select *from
   −> (
   −> select *from OrderByRandName order by rand() limit 10
   −> )tbl1
   −> order by Name;

以下为输出 −

+------+---------+
| Id   | Name    |
+------+---------+
|  101 | Bob     |
|  103 | David   |
|  100 | John    |
|  102 | Johnson |
|  109 | Mark    |
|  108 | Michael |
|  107 | Robert  |
|  106 | Sam     |
|  104 | Smith   |
|  105 | Taylor  |
+------+---------+
10 rows in set (0.39 sec)

更新时间: 30-Jul-2019

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