[Solved] What is the primary use of the SQL LEAD function in analytic queries? — Ans: To access data from the following row within the same result set | SQL

SQL - Advanced Window Functions

What is the primary use of the SQL LEAD function in analytic queries?

ATo filter rows based on a condition

BTo calculate the sum of a column over all rows

CTo access data from the following row within the same result set

DTo join two tables based on a key

Step-by-Step Solution

Solution:

Step 1: Understand LEAD function
The LEAD function is a window function that allows you to look forward to the next row's value within the same partition or ordered set.
Step 2: Compare options
To access data from the following row within the same result set correctly describes this behavior. Options B, C, and D describe other SQL operations unrelated to LEAD.
Final Answer:
To access data from the following row within the same result set -> Option C
Quick Check:
LEAD accesses next row data [OK]

Quick Trick: LEAD fetches next row's value in ordered data [OK]

Common Mistakes:

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What is the primary use of the SQL LEAD function in analytic queries?