[Solved] Identify the error in this query intended to calculate a running total of points ordered by game_date:SELECT player_id, points, SUM(points) OVER (PARTITION BY player_id) ORDER BY game_date FROM... | SQL

SQL - Advanced Window Functions

Identify the error in this query intended to calculate a running total of points ordered by game_date:

SELECT player_id, points, SUM(points) OVER (PARTITION BY player_id) ORDER BY game_date FROM game_scores;

AORDER BY clause is outside the OVER() function

BPARTITION BY cannot be used with SUM()

CMissing GROUP BY clause

DSUM() cannot be used with window functions

Step-by-Step Solution

Solution:

Step 1: Check placement of ORDER BY
ORDER BY for running total must be inside OVER(), not outside the function.
Step 2: Understand correct syntax
Correct syntax: SUM(points) OVER (PARTITION BY player_id ORDER BY game_date).
Final Answer:
ORDER BY clause is outside the OVER() function -> Option A
Quick Check:
ORDER BY must be inside OVER() for running totals [OK]

Quick Trick: Put ORDER BY inside OVER() for running totals [OK]

Common Mistakes:

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