-- we are going to add return reason in orders tables, this will show all colums from orders and all columns from returns -- this will show all data which is matching, and neglect the null value ...

A LEFT OUTER JOIN (or simply LEFT JOIN) in MySQL is used to retrieve all records from the "left" table, and the matched records from the "right" table. If there is no match, NULL values are returned ...

This example illustrates a left outer join of the PROCLIB.PAYROLL and PROCLIB.PAYROLL2 tables. proc sql outobs=10; title 'Most Current Jobcode and Salary Information'; select p.IdNumber, p.Jobcode, ...