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  • Examples
  • Sample Database
#1
SELECT  AVG(buyprice) 'Avarage Price'
FROM products;
#2
SELECT AVG(buyprice)  'Avarage Classic Cars Price'
FROM products
WHERE productline = 'Classic Cars';
#3
SELECT COUNT(buyprice) - COUNT(DISTINCT buyprice)
FROM products;
#4
SELECT AVG(DISTINCT buyprice)
FROM products;
#5
SELECT productline,
AVG(buyprice)  'Avarage Price'
FROM products
GROUP BY productline;
#6
SELECT productline,
AVG(buyprice) 'Avarage Price'
FROM products
GROUP BY productline
HAVING AVG(buyprice) > 50;
#7
SELECT AVG(pl_avg) 'Average Product'
FROM (
SELECT AVG(buyprice) pl_avg
FROM products
GROUP BY productline
) avgs;
#8
SELECT
AVG(IF(productline='Classic Cars',buyprice,NULL)) /
AVG(buyprice)
 'Classic Cars/ Products'
FROM products;
Table List
customers
SELECT * FROM customers;
employees
SELECT * FROM employees;
offices
SELECT * FROM offices;
orderdetails
SELECT * FROM orderdetails;
orders
SELECT * FROM orders;
payments
SELECT * FROM payments;
productlines
SELECT * FROM productlines;
products
SELECT * FROM products;
  • SQL Query
Execute
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  • Result