[Solved] What will be the output of this PL/pgSQL function?CREATE OR REPLACE FUNCTION add_numbers(a INTEGER, b INTEGER) RETURNS INTEGER AS $ BEGIN RETURN a + b; END; $ LANGUAGE plpgsql;... | PostgreSQL

PostgreSQL - Advanced PL/pgSQL

What will be the output of this PL/pgSQL function?

CREATE OR REPLACE FUNCTION add_numbers(a INTEGER, b INTEGER) RETURNS INTEGER AS $$
BEGIN
  RETURN a + b;
END;
$$ LANGUAGE plpgsql;

SELECT add_numbers(3, 5);

A8

B35

CSyntax error

DNULL

Step-by-Step Solution

Solution:

Step 1: Understand function logic
The function takes two integers and returns their sum using RETURN a + b.
Step 2: Evaluate the SELECT call
Calling add_numbers(3, 5) returns 3 + 5 = 8.
Final Answer:
8 -> Option A
Quick Check:
3 + 5 = 8 [OK]

Quick Trick: Add the two input numbers as the function returns sum [OK]

Common Mistakes:

Concatenating numbers as strings
Expecting syntax error due to missing semicolon
Assuming NULL return without explicit return

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What will be the output of this PL/pgSQL function?

Step 1: Understand function logic

Step 2: Evaluate the SELECT call

Final Answer:

Quick Check:

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