[Solved] What does the LATERAL keyword allow you to do in a PostgreSQL query? — Ans: Reference columns from preceding tables in the FROM clause | PostgreSQL

PostgreSQL - Subqueries in PostgreSQL

What does the LATERAL keyword allow you to do in a PostgreSQL query?

AExecute queries faster by parallel processing

BCreate temporary tables automatically

CAutomatically index the result set

DReference columns from preceding tables in the FROM clause

Step-by-Step Solution

Solution:

Step 1: Understand the role of LATERAL
LATERAL allows a subquery to access columns from tables that appear before it in the FROM clause.
Step 2: Compare options
Only Reference columns from preceding tables in the FROM clause correctly describes this behavior; others describe unrelated features.
Final Answer:
Reference columns from preceding tables in the FROM clause -> Option D
Quick Check:
LATERAL usage = Reference preceding tables [OK]

Quick Trick: LATERAL lets subqueries see earlier tables in FROM [OK]

Common Mistakes:

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What does the LATERAL keyword allow you to do in a PostgreSQL query?