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How to order by the highest value from two columns in MySQL?
Let us first create a table −
mysql> create table DemoTable834( Value1 int, Value2 int ); Query OK, 0 rows affected (1.50 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable834 values(10,20); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable834 values(40,50); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable834 values(20,24); Query OK, 1 row affected (0.29 sec) mysql> insert into DemoTable834 values(30,10); Query OK, 1 row affected (0.14 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable834;
This will produce the following output −
+--------+--------+ | Value1 | Value2 | +--------+--------+ | 10 | 20 | | 40 | 50 | | 20 | 24 | | 30 | 10 | +--------+--------+ 4 rows in set (0.00 sec)
Following is the query to order by the highest value from two columns using GREATEST() −
mysql> select *from DemoTable834 order by greatest(Value1,Value2) DESC;
This will produce the following output −
+--------+--------+ | Value1 | Value2 | +--------+--------+ | 40 | 50 | | 30 | 10 | | 20 | 24 | | 10 | 20 | +--------+--------+ 4 rows in set (0.00 sec)
Updated on: 03-Sep-2019
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