[Solved] What benefit does a GIN index provide when applied to a JSONB column in PostgreSQL? — Ans: Speeds up containment and existence queries on JSONB data | PostgreSQL

PostgreSQL - Indexing Strategies

What benefit does a GIN index provide when applied to a JSONB column in PostgreSQL?

AConverts JSONB data into relational tables

BCompresses JSONB data to save disk space

CAutomatically normalizes JSONB data for consistency

DSpeeds up containment and existence queries on JSONB data

Step-by-Step Solution

Solution:

Step 1: Understand GIN index purpose
GIN indexes are designed to speed up queries that test for the presence of elements within composite data types like arrays and JSONB.
Step 2: Identify the benefit for JSONB
For JSONB columns, GIN indexes optimize containment (@>) and existence (?) queries by indexing keys and values efficiently.
Final Answer:
Speeds up containment and existence queries on JSONB data -> Option D
Quick Check:
Does the option mention query speed improvement for JSONB? Yes. [OK]

Quick Trick: GIN indexes speed up containment queries on JSONB [OK]

Common Mistakes:

Master "Indexing Strategies" in PostgreSQL

9 interactive learning modes - each teaches the same concept differently

What benefit does a GIN index provide when applied to a JSONB column in PostgreSQL?