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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)
Updated on: 23-Aug-2019
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