Aggregate Intelligence Quality Analyst Interview Questions and Answers

I took an interview for Quality analyst in aggregate intelligence based on SQL . Be well prepared with SQL statement and Joins is enough for 1 year of experience joins concept is very important all joins like inner outer left right self joins then updates insert create duplicate finding etc.

Q1. Basic knowledge of SQL which asked in 1st round also logical questions for Quality analyst and about previous experience with English
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Q1. Salary discussion
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Q1. What is joins and what are the types of joins
Ans. 
Joins are used to combine data from two or more tables based on a related column.
• Types of joins include inner join, left join, right join, and full outer join

• Inner join returns only the matching rows from both tables

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

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

• Full outer join returns all rows fr...read more
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Q2. What is view and why we use view
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A view is a virtual table that displays data from one or more tables in a database.
• Views are used to simplify complex queries by providing a pre-defined set of data that can be queried like a table.

• They can also be used to restrict access to sensitive data by only allowing certain users to access the view.

• Views can be created using SQL statements and can include joins, filters, and calculations.

• For example, a view coul...read more
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