Pfizer interview question

What is inner, left and outer join?

Interview Answers

Anonymous

12 Feb 2021

use a venn diagram. inner join is the intersection. left join should include all records with key on the left table. same goes for right join

1

Anonymous

13 Jun 2017

A bag contains different colors of marbles. Write a function to manipulate the probability of a red marble.

1

Anonymous

17 Jun 2017

A bag containing different colors

1