[Solved] Identify the error in the following SQL query:WITH cteA AS (SELECT user_id FROM users), cteB AS (SELECT user_id FROM cteC) SELECT * FROM cteB; | SQL

SQL - Common Table Expressions (CTEs)

Identify the error in the following SQL query:

WITH cteA AS (SELECT user_id FROM users), cteB AS (SELECT user_id FROM cteC) SELECT * FROM cteB;

ActeC is referenced before it is defined.

BMissing comma between CTE definitions.

CIncorrect use of SELECT statement inside CTE.

DMultiple WITH clauses used instead of one.

Step-by-Step Solution

Solution:

Step 1: Review CTE definitions
Two CTEs: cteA and cteB are defined; cteB references cteC.
Step 2: Check references
cteC is not defined anywhere in the query, so referencing it in cteB causes an error.
Step 3: Validate other options
Commas are correctly placed; SELECT syntax is valid; only one WITH clause is used.
Final Answer:
Option A -> Option A
Quick Check:
CTEs must be defined before use [OK]

Quick Trick: CTEs must be defined before referencing [OK]

Common Mistakes:

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