Q:

From the following table, write a SQL query to calculate average price of the items of each company

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From the following table, write a SQL query to calculate average price of the items of each company. Return average price and company code.

 PRO_ID PRO_NAME                       PRO_PRICE    PRO_COM
------- ------------------------- -------------- ----------
    101 Mother Board                    3200.00         15
    102 Key Board                        450.00         16
    103 ZIP drive                        250.00         14
    104 Speaker                          550.00         16
    105 Monitor                         5000.00         11
    106 DVD drive                        900.00         12
    107 CD drive                         800.00         12
    108 Printer                         2600.00         13
    109 Refill cartridge                 350.00         13
    110 Mouse                            250.00         12

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SELECT AVG(pro_price), pro_com
    FROM item_mast
GROUP BY pro_com;

Output of the Query:

avg					pro_com
250.0000000000000000			14
650.0000000000000000			12
3200.0000000000000000			15
5000.0000000000000000			11
1475.0000000000000000			13
500.0000000000000000			16

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