[Solved] What is wrong with this SQL query?SELECT user_id, LEAD(score) FROM GameResults ORDER BY user_id; — Ans: LEAD function is missing an OVER() clause | SQL

SQL - Advanced Window Functions

What is wrong with this SQL query?

SELECT user_id, LEAD(score) FROM GameResults ORDER BY user_id;

ALEAD cannot be used with numeric columns

BORDER BY cannot be used in SELECT statements

CLEAD function is missing an OVER() clause

Duser_id must be included inside LEAD()

Step-by-Step Solution

Solution:

Step 1: Check LEAD usage
The LEAD function requires an OVER() clause to specify the window for row access.
Step 2: Analyze the query
The query uses LEAD(score) without OVER(), which is invalid syntax.
Step 3: Validate other options
ORDER BY is valid at the end of the query. LEAD works with numeric columns. user_id does not need to be inside LEAD.
Final Answer:
LEAD function is missing an OVER() clause -> Option C
Quick Check:
LEAD requires OVER() clause [OK]

Quick Trick: LEAD must always have OVER() clause [OK]

Common Mistakes:

Master "Advanced Window Functions" in SQL

9 interactive learning modes - each teaches the same concept differently

More SQL Quizzes

What is wrong with this SQL query?