Join in a From Clause Purpose You can use a Join as a way to associate multiple tables within a Select statement. Joins may be either explicit or implicit. For example, the following is the example from the previous section restated as an explicit inner join: SELECT e.name, d.deptName FROM emp e INNER JOIN dep d ON e.deptId = d.id; Syntax FROM table_name {RIGHT OUTER | INNER | LEFT OUTER | CROSS} JOIN table.key ON search-condition Example In this example, two tables are joined using LEFT OUTER JOIN. T1, the first table named includes nonmatching rows. SELECT * FROM T1 LEFT OUTER JOIN T2 ON T1.key = T2.key If you use a CROSS JOIN, no ON expression is allowed for the join.