[Solved] Identify the error in this function:CREATE FUNCTION get_values() RETURNS SETOF integer AS $ BEGIN RETURN 1; RETURN 2; END; $ LANGUAGE plpgsql; | PostgreSQL

PostgreSQL - Advanced PL/pgSQL

Identify the error in this function:

CREATE FUNCTION get_values() RETURNS SETOF integer AS $$ BEGIN RETURN 1; RETURN 2; END; $$ LANGUAGE plpgsql;

AFunction missing LANGUAGE declaration

BUsing RETURN instead of RETURN NEXT for SETOF

CMissing RETURN QUERY statement

DIncorrect RETURNS type

Step-by-Step Solution

Solution:

Step 1: Check RETURN usage for SETOF
RETURN returns a single value and ends function. For SETOF, RETURN NEXT must be used to add rows.
Step 2: Verify other parts
LANGUAGE plpgsql is present, RETURNS type is correct, RETURN QUERY is optional alternative.
Final Answer:
Using RETURN instead of RETURN NEXT for SETOF -> Option B
Quick Check:
Use RETURN NEXT to add rows in SETOF functions [OK]

Quick Trick: Use RETURN NEXT, not RETURN, in SETOF functions [OK]

Common Mistakes:

Master "Advanced PL/pgSQL" in PostgreSQL

9 interactive learning modes - each teaches the same concept differently

Identify the error in this function: