Joins the rows of {0} with the rows of {2} based on the equality of the values of the key columns selected by {1} (for {0}) ...

Joins the rows of {0} with the rows of {2} based on the equality of the values of the key columns selected by {1} (for {0}) and {3} (for {2}). The results are entered into the column named {4}.
     The optional {4} specifies the kind of join to perform. By default, a left outer join is performed if a {4} is not specified.