[Solved] What is the main purpose of using VARIADIC parameters in a PostgreSQL function? — Ans: To allow the function to accept a variable number of arguments as an array | PostgreSQL

PostgreSQL - Advanced PL/pgSQL

What is the main purpose of using VARIADIC parameters in a PostgreSQL function?

ATo specify the function is only for internal use

BTo allow the function to accept a variable number of arguments as an array

CTo declare a function that returns multiple result sets

DTo enforce a fixed number of arguments in the function call

Step-by-Step Solution

Solution:

Step 1: Understand the role of VARIADIC
The VARIADIC keyword allows a function to accept a variable number of arguments as a single array parameter.
Step 2: Compare with other options
Options A, B, and C describe unrelated behaviors: fixed arguments, multiple result sets, or internal use, which are incorrect.
Final Answer:
To allow the function to accept a variable number of arguments as an array -> Option B
Quick Check:
VARIADIC usage = variable arguments [OK]

Quick Trick: VARIADIC lets functions take many arguments as one array [OK]

Common Mistakes:

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What is the main purpose of using VARIADIC parameters in a PostgreSQL function?