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How to retrieve a random row or multiple random rows in MySQL?
You can use RAND() method for this. To retrieve a random row, use the following syntax
SELECT *FROM yourTableName ORDER BY RAND() LIMIT yourIntegerNumber;
To understand the above syntax, let us create a table. The query to create a table is as follows
mysql> create table gettingRandomRow -> ( -> CustomerId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> CustomerName varchar(100) -> ); Query OK, 0 rows affected (0.45 sec)
Insert some records in the table using insert command. The query is as follows −
mysql> insert into gettingRandomRow(CustomerName) values('Chris');
Query OK, 1 row affected (0.14 sec)
mysql> insert into gettingRandomRow(CustomerName) values('Robert');
Query OK, 1 row affected (0.10 sec)
mysql> insert into gettingRandomRow(CustomerName) values('Ramit');
Query OK, 1 row affected (0.15 sec)
mysql> insert into gettingRandomRow(CustomerName) values('James');
Query OK, 1 row affected (0.11 sec)
mysql> insert into gettingRandomRow(CustomerName) values('Jace');
Query OK, 1 row affected (0.12 sec)
mysql> insert into gettingRandomRow(CustomerName) values('Mike');
Query OK, 1 row affected (0.15 sec)
mysql> insert into gettingRandomRow(CustomerName) values('Sam');
Query OK, 1 row affected (0.17 sec)
mysql> insert into gettingRandomRow(CustomerName) values('Bob');
Query OK, 1 row affected (0.12 sec)
mysql> insert into gettingRandomRow(CustomerName) values('Carol');
Query OK, 1 row affected (0.11 sec)
mysql> insert into gettingRandomRow(CustomerName) values('David');
Query OK, 1 row affected (0.16 sec)
mysql> insert into gettingRandomRow(CustomerName) values('Maxwell');
Query OK, 1 row affected (0.14 sec)
mysql> insert into gettingRandomRow(CustomerName) values('Larry');
Query OK, 1 row affected (0.13 sec)
mysql> insert into gettingRandomRow(CustomerName) values('John');
Query OK, 1 row affected (0.11 sec)Display all records from the table using select statement. The query is as follows −
mysql> select *from gettingRandomRow;
The following is the output
+------------+--------------+ | CustomerId | CustomerName | +------------+--------------+ | 1 | Chris | | 2 | Robert | | 3 | Ramit | | 4 | James | | 5 | Jace | | 6 | Mike | | 7 | Sam | | 8 | Bob | | 9 | Carol | | 10 | David | | 11 | Maxwell | | 12 | Larry | | 13 | John | +------------+--------------+ 13 rows in set (0.00 sec)
Here is the query to get a random row or multiple random rows.
Case 1: The query is as follows −
mysql> select *from gettingRandomRow order by rand() LIMIT 1;
The following is the output
+------------+--------------+ | CustomerId | CustomerName | +------------+--------------+ | 13 | John | +------------+--------------+ 1 row in set (0.00 sec)
Case 2: The query is as follows −
mysql> select *from gettingRandomRow order by rand() LIMIT 2;
The following is the output
+------------+--------------+ | CustomerId | CustomerName | +------------+--------------+ | 2 | Robert | | 3 | Ramit | +------------+--------------+ 2 rows in set (0.00 sec)
Case 3: The query is as follows −
mysql> select *from gettingRandomRow order by rand() LIMIT 2;
The following is the output
+------------+--------------+ | CustomerId | CustomerName | +------------+--------------+ | 4 | James | | 9 | Carol | +------------+--------------+ 2 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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