ZS Technology Analyst Interview Questions and Answers

It was a aptitude test

Q1. It was a sql round
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Q1. It was a techno manegerial round
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Q1. Basic HR round it was
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Any regular Apti test containing a number of questions

About a food industry

General GD to talk on anything

Normal Qunatative apti

There will be some data and tables , you will be asked to analyse the data and write SQL queries so study well SQL and its implementation on data.

Q1. Tell me about joins in SQL
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column.

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL 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.

• RI...read more
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Q2. Tell me about aggregation
Ans. 
Aggregation is the process of combining data from multiple sources into a single, unified view.
• Aggregation is commonly used in databases to summarize and analyze large amounts of data.

• It can involve grouping data based on certain criteria, performing calculations, and presenting the results in a meaningful way.

• Examples of aggregation functions include SUM, AVG, COUNT, MAX, and MIN.

• Aggregation is also used in data visua...read more
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Q1. Tell me about your college project
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