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MySQL SELECT products WHERE 'average price per product' < value?
Let us first create a table −
mysql> create table DemoTable848( ProductId int, ProductPrice int ); Query OK, 0 rows affected (1.20 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable848 values(100,30); Query OK, 1 row affected (0.57 sec) mysql> insert into DemoTable848 values(101,50); Query OK, 1 row affected (1.06 sec) mysql> insert into DemoTable848 values(100,40); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable848 values(101,25); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable848 values(100,20); Query OK, 1 row affected (0.31 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable848;
This will produce the following output −
+-----------+--------------+ | ProductId | ProductPrice | +-----------+--------------+ | 100 | 30 | | 101 | 50 | | 100 | 40 | | 101 | 25 | | 100 | 20 | +-----------+--------------+ 5 rows in set (0.00 sec)
Following is the query to select products WHERE 'average price per product' < value. Here, we wanted the average to be less than 35. The same is only valid for corresponding column values with ProductId 100 −
mysql> select ProductId,avg(ProductPrice) from DemoTable848 group by ProductId having AVG(ProductPrice) < 35;
This will produce the following output −
+-----------+-------------------+ | ProductId | avg(ProductPrice) | +-----------+-------------------+ | 100 | 30.0000 | +-----------+-------------------+ 1 row in set (0.00 sec)
Updated on: 03-Sep-2019
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