When you use the Query window, you can perform inner joins or outer joins (left, right, and full) on DB2 tables. If one primary key/foreign key relation is defined between the tables, Query and ...

The WHERE clause or ON clause contains the conditions (sql-expression) under which the rows in the Cartesian product are kept or eliminated in the result table. WHERE is used to select rows from inner ...

In this SQL Server tip, Arthur Fuller explains the effects of NULLs, and the different results obtained by inner and outer JOINs.

I need to form the equivalent of a Union Join in Oracle 8i, even though a Union Join doesn't appear to be supported in 8i. I might be able to manipulate a Full Outer Join to get the results I need ...