Refresher/SQL/Most Frequently Asked

Presentation

Most Frequently Asked    
 
 Inner join: intersection, e.g. SELECT Person.LastName, Person.FirstName, Sales.OrderNo FROM Person INNER JOIN Sales ON Person.P_Id=Sales.P_Id ORDER BY Person.LastName
 
 
 Outer join: union, e.g.
 
 
 Foreign key: primary key of another table.