Real questions from top companies in SQL
Can you chain multiple triggers for a single pipeline?
Can you describe a project where you handled large volumes of data?
Can you modify a partitioned table into a non-partitioned one and vice-versa? How?
Can you provide a use case where Assert Transformations helped maintain data quality?
Can you share an experience where you resolved a conflict within your team?
Case statement in SQL - explain
Check for duplicates in a table.
Cloud Architecture - explain
Coalesce function in SQL - explain
Compare Airflow's @daily vs once trigger scheduling.
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.
Convert row-level records to column records.
Converting SCD0 to SCD3
Count occurrences of each character in a string
Count records for INNER JOIN and LEFT JOIN
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