SQL how to compare two columns from two different tables

Question

I have two tables, in which table 1 contains 4 columns while table 2 contains 8 columns. I have two columns in table1 that I want to compare them with two columns in table2.

Answer 1

Try a minus statement. This will give you any results from the first select statement of table1 that aren't in the second select statement on table2.

select column1, column2 from table1
minus
select column6, column7 from table2