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Shuffling column values with MySQL?
To shuffle elements, you need to use ORDER BY RAND(). Let us first create a table −
mysql> create table DemoTable1557 -> ( -> SubjectId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> SubjectName varchar(20) -> ); Query OK, 0 rows affected (0.91 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1557(SubjectName) values('MySQL');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable1557(SubjectName) values('MongoDB');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable1557(SubjectName) values('Java');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable1557(SubjectName) values('C');
Query OK, 1 row affected (0.13 sec)Display all records from the table using select −
mysql> select * from DemoTable1557;
This will produce the following output −
+-----------+-------------+ | SubjectId | SubjectName | +-----------+-------------+ | 1 | MySQL | | 2 | MongoDB | | 3 | Java | | 4 | C | +-----------+-------------+ 4 rows in set (0.00 sec)
Following is the query to shuffle records with MySQL −
mysql> select * from DemoTable1557 order by rand();
This will produce the following output −
+-----------+-------------+ | SubjectId | SubjectName | +-----------+-------------+ | 1 | MySQL | | 3 | Java | | 2 | MongoDB | | 4 | C | +-----------+-------------+ 4 rows in set (0.00 sec)
Updated on: 12-Dec-2019
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