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Interview questions · medium
Write an SQL query to find the second-highest salary from an employee table.
How do you remove duplicate rows in BigQuery?
What is the role of AWS Lambda in a data engineering pipeline?
Explain SQL Window Functions with examples.
Explain the use of the MERGE statement in SQL.
How do you handle NULL values in SQL? Mention functions like COALESCE and ISNULL.
How would you handle duplicate records in an SQL table?
Write a SQL query to find top 3 earners in each department.
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