Examples and Notes by Week

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View CounOfOrdersByYear.sql code.	Open/Save CounOfOrdersByYear.sql.
View GroupByNeedsOrderBy.sql code.	Open/Save GroupByNeedsOrderBy.sql.
View GroupByVsDistince.sql code.	Open/Save GroupByVsDistince.sql.
View OrderTotadForYear_with_HAVING.sql code.	Open/Save OrderTotadForYear_with_HAVING.sql.
View OrderTotalWithHaving.sql code.	Open/Save OrderTotalWithHaving.sql.
View OrderTotalWithHavingAnd.sql code.	Open/Save OrderTotalWithHavingAnd.sql.
View orderTotalByStatus.sql code.	Open/Save orderTotalByStatus.sql.
View orderTotalByYear.sql code.	Open/Save orderTotalByYear.sql.
View orderTotals.sql code.	Open/Save orderTotals.sql.
View status.sql code.	Open/Save status.sql.

The code for orderTotals.sql is:
SELECT customerName, orderNumber, SUM(quantityOrdered * priceEach) AS total FROM orderdetails JOIN orders USING(orderNumber) JOIN customers USING(customerNumber) GROUP BY orderNumber;