I'm trying to get sales and quantity sale by crossing two tables, group by the first one and sum from the second one.
First table has sales/operations: id_sales, sales_rep Second table has sales details: id_sales_details, id_sales, quantity
What I need to know is how many operations had each sales_rep and what was the total quantity sum of all those sales.
This MySQL query gives me the first part:
SELECT sales.sales_rep, count(*) AS sales
from sales
Group by sales_rep
Order by sales DESC
What I cannot solve is how to add to that query the second part I need. The result should look something like:
sales_rep sales quantity
Claire 4 13
Peter 2 18
Mary 1 8
John 1 7
Here's a Fiddle to make things clearer: http://sqlfiddle.com/#!9/708234/5
SELECT s.sales_rep, count(*) AS operations, sum(d.quantity)
from sales s, sales_details d
where s.id_sales = d.id_sales
Group by s.sales_rep
Order by operations DESC;
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