SQL - Common Table Expressions (CTEs)
Which part of a Recursive CTE defines the stopping condition?
Which part of a Recursive CTE defines the stopping condition?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify stopping condition in recursive CTE
The recursive member query runs repeatedly until no new rows are returned, which acts as the stopping condition.Step 2: Analyze options
The anchor member initializes the recursion, UNION combines results, and final SELECT retrieves data, but stopping depends on recursive member.Final Answer:
The recursive member query -> Option BQuick Check:
Stopping condition = recursive member query [OK]
Quick Trick: Stopping happens when recursive query returns no new rows [OK]
Common Mistakes:
- Thinking anchor member controls recursion end
- Confusing UNION with stopping condition
- Assuming final SELECT stops recursion
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