How to join two tables by multiple columns in SQL?

Question

I have two tables named Evaluation and Value.

In both tables, there are four columns. But three of the four are the same. In other words, th

Answer 1

No, just include the different fields in the "ON" clause of 1 inner join statement:

SELECT * from Evalulation e JOIN Value v ON e.CaseNum = v.CaseNum
    AND e.FileNum = v.FileNum AND e.ActivityNum = v.ActivityNum