Which one is better Group by or Partition by? | SQL Interview question | interview preparation sql

Which one is better Group by or Partition by?

The GROUP BY clause divides a table into groups based on the specified columns. Rows with identical values in those columns are placed into the same group.
Aggregation:
It's typically used with aggregate functions (like COUNT, SUM, AVG, MAX, MIN) to perform calculations on each group. For example, you might count the number of customers in each city or calculate the average salary for each department.
The SQL PARTITION BY clause divides a result set into partitions, allowing window functions to operate independently on each partition. It's a key part of window function syntax, enabling calculations like ranking or running totals within each partition. Unlike GROUP BY, PARTITION BY doesn't collapse rows; it adds calculated columns to the original result set. Prepare for your SQL interview with our frequently asked SQL interview questions and answers. Nail your SQL mock interview with these helpful tips and tricks!
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