MySQL Query - How to Get Data From Current Month and Same Month Last Year?

I have a simple query that sums sales totals for September and compares them with Sept of last year. How can I write this so that it auto updates with the current month month each month?

Select Salesman,
 SUM(CASE WHEN InvoiceDate Between '2015-9-1' and '2015-9-30' THEN Totsales else 0 end) as Sales15,
 SUM(CASE WHEN InvoiceDate Between '2016-9-1' and '2016-9-30' THEN Totsales else 0 end) as Sales16
 from vCustomerInvoiceDetail
Group by Salesman

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This is part of a PHP script so if there's a better/easier way to do it in PHP I'd be happy to hear about that as well.

Thank You!

PHPSQL

Last Comment

dannyg280

8/22/2022 - Mon

ASKER CERTIFIED SOLUTION

Ferruccio Accalai

9/12/2016

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Julian Hansen

9/12/2016

I think this is what you asked for - not sure it is what you want. For this to mean anything it would need to run on the last day of the month. Otherwise if you want to look back at the last month it would require some tweaking.

SELECT Salesman,
 SUM(CASE WHEN InvoiceDate BETWEEN CONCAT(YEAR(NOW())-1, '-', MONTH(NOW()), '-01') AND CONCAT(YEAR(NOW())-1, '-', MONTH(NOW()), '-', DAY(LAST_DAY(NOW()))) THEN Totsales ELSE 0 END) AS Sales15,
 SUM(CASE WHEN InvoiceDate BETWEEN CONCAT(YEAR(NOW()), '-', MONTH(NOW()), '-01') AND CONCAT(YEAR(NOW()), '-', MONTH(NOW()), '-', DAY(LAST_DAY(NOW()))) THEN Totsales ELSE 0 END) AS Sales16
 FROM vCustomerInvoiceDetail
GROUP BY Salesman

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dannyg280

9/12/2016

ASKER

Worked great! Thank You!

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