Senior BI Consultant Interview Questions and Answers

Joins are used to combine rows from two or more tables based on a related column between them.

• Types of joins include inner join, left join, right join, and full outer join.

• Inner join returns rows when there is at least one match in both tables.

• Left join returns all rows from the left table and the matched rows from the right table.

• Right join returns all rows from the right table and the matched rows from the left table.

• Full outer join returns all rows when there is a match in...read more