sql - What is 'keyword' is missing from this query? -


this have;

select c.customerfn, c.customeremail, p.productname,  sum(p.unitsonstock + p.unitsordered) "all units" customer c inner join order o  c.customerid=o.customerid inner join orderdetails d   o.orderid=d.orderid inner join product p  p.productcode=l.productcode orderdate <= '2015-03-15'  order productname;

when enter database throws "missing keyword" error @ fourth line. tell me i'm missing

join performed using on clause, not where:

... customer c inner join order o on c.customerid=o.customerid inner join orderdetails d on o.orderid=d.orderid inner join product p on p.productcode=d.productcode orderdate <= '2015-03-15'     ...

the where clause comes after join should used have in query.

apart problem join there problem using sum without grouping. want like:

select c.customerfn, c.customeremail, p.productname,         sum(p.unitsinstock + p.unitsordered) "all units" customer c inner join order o on c.customerid=o.customerid inner join orderdetails d on o.orderid=d.orderid inner join product p on p.productcode=d.productcode orderdate <= '2015-03-15' group customerfn, customeremail, productname order p.productname;

use of sum function implies group by clause. every column selected not part of aggregate function sum must present in group by clause.


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