Worldline Business Analyst Interview Questions and Answers

Seeking new challenges and opportunities for growth and development.

• Looking to expand skill set and knowledge in different industries

• Interested in working on diverse projects with varying complexities

• Seeking a more dynamic and stimulating work environment

• Wanting to make a greater impact and contribute to innovative solutions

Different types of joins in SQL 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 rows when there is a match in one of the tables.

Rank assigns unique ranks to each distinct row, while dense_rank assigns consecutive ranks to rows with the same values.

• Rank leaves gaps in rank numbers if there are ties, while dense_rank does not

• Rank function is used to assign unique ranks to each distinct row in the result set

• Dense_rank function is used to assign consecutive ranks to rows with the same values

• Example: If there are two rows with the same value, rank w...read more