Real questions from top companies in SQL
Compare OLTP and OLAP systems in the context of financial transactions.
Compare PostgreSQL vs Snowflake. How do they handle duplicate record errors?
Compare Redshift, BigQuery, and Snowflake in terms of cost, performance, and scalability.
Compare the star schema and snowflake schema. Which one would you use for reporting at Swiggy, and why?
Connecting BigQuery with Linux
Consolidate hotel reviews and create a dashboard. Design a data model for the reviews.
Converting SCD0 to SCD3
Create Spark Session, read CSV, join, and write as table. Provide example code.
Data Warehouse Design from scratch
Describe a challenging project where you optimized a complex ETL process.
Describe a situation where you had to redesign a data model to meet changing business needs
Design a Custom API that can query a backend server and return customer data such as the number of orders placed by a user based on their user ID
Design a daily ETL pipeline to ingest API data into BigQuery.
Design a financial database system focusing on database models, schema design, partition keys, and query optimization techniques.
Design a relational data model for a sales database, incorporating normalization techniques
Design a structure (data model) that allows efficient querying of movies based on multiple search criteria (title, genre, actor, director).
Design the data model for an ETL pipeline that ingests data from a database and loads it into Snowflake
Designing backend architecture for SQL Warehouse?
Designing scalable data models - explain approach
Difference Between Truncate/Delete and Union/Union All – Performance and Usage
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