[Solved] What is the role of the anchor member in a recursive CTE used for generating a numeric sequence? — Ans: It provides the initial row(s) to start the recursion | SQL

SQL - Common Table Expressions (CTEs)

What is the role of the anchor member in a recursive CTE used for generating a numeric sequence?

AIt specifies the data type of the generated series

BIt defines the maximum value of the sequence

CIt terminates the recursion to prevent infinite loops

DIt provides the initial row(s) to start the recursion

Step-by-Step Solution

Solution:

Step 1: Understand anchor member
The anchor member is the first SELECT statement in a recursive CTE that provides the initial row(s) to start the recursion.
Step 2: Role in recursion
It seeds the recursion with a base case, without which the recursive part has no starting point.
Final Answer:
It provides the initial row(s) to start the recursion -> Option D
Quick Check:
Anchor member = starting point [OK]

Quick Trick: Anchor member starts recursion with initial rows [OK]

Common Mistakes:

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What is the role of the anchor member in a recursive CTE used for generating a numeric sequence?