[Solved] Which of these is a valid reason to use named windows with the WINDOW clause? — Ans: To avoid repeating the same window definition multiple times | PostgreSQL

PostgreSQL - Window Functions in PostgreSQL

Which of these is a valid reason to use named windows with the WINDOW clause?

ATo create indexes on window functions

BTo encrypt data in window functions

CTo store query results permanently

DTo avoid repeating the same window definition multiple times

Step-by-Step Solution

Solution:

Step 1: Identify the benefit of named windows
Named windows let you reuse window definitions, avoiding repetition in queries.
Step 2: Eliminate unrelated options
Options A, C, and D describe unrelated database features like indexing, storage, and encryption.
Final Answer:
To avoid repeating the same window definition multiple times -> Option D
Quick Check:
Named windows purpose = Avoid repetition [OK]

Quick Trick: Named windows save typing repeated window specs [OK]

Common Mistakes:

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Which of these is a valid reason to use named windows with the WINDOW clause?