[Solved] Find the error in this SQL snippet:WITH cte1 AS (SELECT 1 AS val), cte2 AS (SELECT val + 1 FROM cte3) SELECT * FROM cte2; | SQL

SQL - Common Table Expressions (CTEs)

Find the error in this SQL snippet:

WITH cte1 AS (SELECT 1 AS val), cte2 AS (SELECT val + 1 FROM cte3) SELECT * FROM cte2;

ACannot use multiple CTEs in one WITH clause

Bcte3 is not defined before use

CMissing AS keyword for cte2

DSELECT * FROM cte2 is invalid

Step-by-Step Solution

Solution:

Step 1: Check CTE references
cte2 references cte3, which is not defined in the WITH clause.
Step 2: Confirm other syntax
AS keyword is present, multiple CTEs are allowed, and SELECT * FROM cte2 is valid.
Final Answer:
cte3 is not defined before use -> Option B
Quick Check:
CTEs must be defined before use [OK]

Quick Trick: Define all CTEs before referencing them [OK]

Common Mistakes:

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