havingQuery[1] - List the salespeople whose average order...

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Sample SQL query with the "having" clause (adapted from LAN Times Guide to SQL by James R. Groff and Paul N. Weinberg, Mc Graw Hill, 1994). Given the schema salesreps(empl_num,name,age,rep_office,title,hire_date,manager,quota,sales) orders(order_num,order_date,cust,rep,mfr,product,qty,amount) Foreign keys: orders.rep references salesreps.empl_num
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Unformatted text preview: List the salespeople whose average order size for products manufactured by XYZ is higher than overall average order size. select name, avg(amount) from salesreps, orders where empl_num = rep and mfr = 'XYZ' group by name having avg(amount) > (select avg(amount) from orders)...
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