Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations IamaSherpa on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
-
To join n tables together, you need a minimum of (n-1) join conditions
A perfect example is a table that has a composite primary key that is referenced by another table. In that case, you would have to join the two tables by specifying each of the columns in the key. For example, assume these two tables: CREATE TABLE table1 ( t1_key1 NUMBER NOT NULL...
