How to change order of items in MySQL?

To change order of items in MySQL, use ORDER BY alias name. Let us first create a table −

mysql> create table DemoTable653 (Product1Amount int,Product2Amount int);
Query OK, 0 rows affected (0.42 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable653 values(400,250);
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable653 values(500,300);
Query OK, 1 row affected (0.16 sec)
mysql> insert into DemoTable653 values(40,400);
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable653 values(200,450);
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable653 values(50,20);
Query OK, 1 row affected (0.10 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable653;

This will produce the following output −

+----------------+----------------+
| Product1Amount | Product2Amount |
+----------------+----------------+
|            400 |            250 |
|            500 |            300 |
|            40  |            400 |
|            200 |            450 |
|            50  |             20 |
+----------------+----------------+
5 rows in set (0.00 sec)

Following is the query to change the order of items and display the difference −

mysql> select Product1Amount,Product2Amount,(Product1Amount-Product2Amount) as ProductAmountDifference from DemoTable653 order by ProductAmountDifference;

This will produce the following output −

+----------------+----------------+-------------------------+
| Product1Amount | Product2Amount | ProductAmountDifference |
+----------------+----------------+-------------------------+
| 40             |            400 |                    -360 |
| 200            |            450 |                    -250 |
| 50             |             20 |                      30 |
| 400            |            250 |                     150 |
| 500            |            300 |                     200 |
+----------------+----------------+-------------------------+
5 rows in set (0.29 sec)

AmitDiwan

Published on 23-Aug-2019 11:39:37

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