Fix a specific column value and display random values for rest of the rows in MySQL

For random rows, you can use RAND(), whereas to fix a specific column, use ORDER BY clause. Let us create a table −

mysql> create table DemoTable1921    (    Number int    ); Query OK, 0 rows affected (0.00 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable1921 values(40); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1921 values(80); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1921 values(820); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1921 values(10); Query OK, 1 row affected (0.00 sec)

Display all records from the table using select statement −

mysql> select * from DemoTable1921;

This will produce the following output −

+--------+ | Number | +--------+ |     40 | |     80 | |    820 | |     10 | +--------+ 4 rows in set (0.00 sec)

Here is the query to fix a specific column value and display rest of the rows with random values −

mysql> select * from DemoTable1921    order by (Number=40)desc,rand();

This will produce the following output −

+--------+ | Number | +--------+ |     40 | |    820 | |     10 | |     80 | +--------+ 4 rows in set (0.00 sec)