Question

I need to join multiple tables. The command that I am using is as follows:

G = JOIN aa BY f, bb by f, cc by f, dd by f;

To make it a full outer join, I added a FULL to make it:

G = JOIN aa BY f FULL, bb by f, cc by f, dd by f;

But it gives me a mismatched input error message. How should I make this work?

Thanks!

Answer 1

According to the Pig documentation :

Outer joins will only work for two-way joins; to perform a multi-way
outer join, you will need to perform multiple two-way outer join
statements.