[Solved] What does the REFRESH MATERIALIZED VIEW command do in PostgreSQL? — Ans: It updates the stored data in the materialized view to match the current data... | PostgreSQL

PostgreSQL - Views and Materialized Views

What does the REFRESH MATERIALIZED VIEW command do in PostgreSQL?

AIt updates the stored data in the materialized view to match the current data in the base tables.

BIt deletes the materialized view from the database.

CIt creates a new materialized view with the same name.

DIt renames the materialized view to a new name.

Step-by-Step Solution

Solution:

Step 1: Understand the purpose of materialized views
Materialized views store query results physically, so they need updating when base data changes.
Step 2: Role of REFRESH MATERIALIZED VIEW
This command updates the stored data to reflect current base table data.
Final Answer:
It updates the stored data in the materialized view to match the current data in the base tables. -> Option A
Quick Check:
REFRESH MATERIALIZED VIEW updates stored results [OK]

Quick Trick: Refresh updates stored data to current base table data [OK]

Common Mistakes:

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What does the REFRESH MATERIALIZED VIEW command do in PostgreSQL?