Carelon Global Solutions Interview Questions, Process, and Tips

Analytical functions in SQL are used to perform calculations on a set of rows and return a single result for each row.

• Analytical functions are used to calculate running totals, moving averages, and rank functions.

• They are used with the OVER() clause to define the window of rows to be used in the calculation.

• Examples of analytical functions include ROW_NUMBER(), RANK(), DENSE_RANK(), LAG(), LEAD(), SUM(), AVG(), MAX(),

Root cause can be found through a systematic approach of identifying and analyzing the problem.

• Gather data and information about the problem

• Identify possible causes through brainstorming or fishbone diagram

• Analyze the data to determine the most likely cause

• Verify the cause through testing or experiments

• Implement corrective actions to address the root cause