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Questions tagged sql · medium
Reverse operation for splitting values back to original format
How many cities does each department operate in? List the top 3 departments in terms of the most number of cities. In case of a tie, order by dept_id.
Stuff Function for XML Usages
Write a Python program to calculate total spending, identify top 5 users by spending, and find the most purchased product
Add Row Numbers using window function in PySpark
Advanced SQL with CTEs and Conditional Joins
Coalesce function in SQL - explain
Compare PostgreSQL vs Snowflake. How do they handle duplicate record errors?
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