Master SQL for Data Analyst Interviews
From basic queries to advanced window functions — learn exactly what top companies ask and how to answer confidently.
Work through each topic in order — from fundamentals to advanced questions asked at top companies.
SQL Fundamentals
SELECT, WHERE, ORDER BY, GROUP BY — the building blocks every analyst must master.
Joins (INNER, LEFT, RIGHT, FULL)
Combine tables confidently. The most common SQL topic in interviews at all levels.
Subqueries & CTEs
Write clean, readable SQL with Common Table Expressions and nested queries.
Window Functions
RANK, DENSE_RANK, ROW_NUMBER, LAG, LEAD — asked in almost every senior interview.
Aggregations & HAVING
COUNT, SUM, AVG with GROUP BY and HAVING for data summarisation questions.
Real Interview Questions
50+ real questions from Google, Amazon, Flipkart, Swiggy and more — with solutions.
These exact questions have been asked at top Indian and global tech companies.
Think out loud
Interviewers want to hear your thought process. Say what you’re doing before you write it — even if you make mistakes.
Clarify the question first
Before writing a single line, ask about edge cases. Are nulls possible? Is the date format consistent? This impresses interviewers.
Verify with sample data
After writing your query, trace through it with 2-3 sample rows in your head to confirm it gives the right output.
Know window functions deeply
RANK, ROW_NUMBER, LAG, LEAD, and SUM OVER are asked in 80% of senior analyst interviews. Practise these daily.
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