[Solved] How can you combine a function returning SETOF with a JOIN to get related data from two tables? — Ans: Call the function in FROM clause and JOIN with another table on matching keys | PostgreSQL

PostgreSQL - Advanced PL/pgSQL

How can you combine a function returning SETOF with a JOIN to get related data from two tables?

AUse the function in WHERE clause with JOIN

BFunctions returning SETOF cannot be joined with tables

CUse the function as a scalar subquery in SELECT list

DCall the function in FROM clause and JOIN with another table on matching keys

Step-by-Step Solution

Solution:

Step 1: Understand how to use SETOF functions in queries
Functions returning SETOF can be used like tables in the FROM clause.
Step 2: Joining with other tables
You can JOIN the function result with other tables on matching keys in the FROM clause.
Final Answer:
Call the function in FROM clause and JOIN with another table on matching keys -> Option D
Quick Check:
SETOF functions act like tables for JOINs [OK]

Quick Trick: Use SETOF function in FROM clause to JOIN tables [OK]

Common Mistakes:

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How can you combine a function returning SETOF with a JOIN to get related data from two tables?