[Solved] Identify the issue in this recursive CTE:WITH RECURSIVE cte AS (SELECT 0 AS val UNION ALL SELECT val + 2 FROM cte WHERE val <= 6) SELECT * FROM cte; | SQL

SQL - Common Table Expressions (CTEs)

Identify the issue in this recursive CTE:

WITH RECURSIVE cte AS (SELECT 0 AS val UNION ALL SELECT val + 2 FROM cte WHERE val <= 6) SELECT * FROM cte;

AIt will generate an infinite loop

BThe recursion stops correctly at val = 8

CThe base case is missing

DThe WHERE clause condition is incorrect

Step-by-Step Solution

Solution:

Step 1: Analyze Anchor Member
Starts at val = 0.
Step 2: Recursive Member
Adds 2 each time while val <= 6.
Step 3: Check Termination
Recursion stops when val becomes 8 (since 8 <= 6 is false).
Final Answer:
The recursion stops correctly at val = 8 -> Option B
Quick Check:
Termination condition prevents infinite recursion [OK]

Quick Trick: Check WHERE clause for recursion stop condition [OK]

Common Mistakes:

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