[Solved] What does the FOREACH statement do in PostgreSQL when used with arrays? — Ans: It loops through each element of the array one by one. | PostgreSQL

PostgreSQL - PL/pgSQL Fundamentals

What does the FOREACH statement do in PostgreSQL when used with arrays?

AIt deletes all elements from the array.

BIt sorts the array elements in ascending order.

CIt converts the array into a string.

DIt loops through each element of the array one by one.

Step-by-Step Solution

Solution:

Step 1: Understand the purpose of FOREACH
The FOREACH statement is designed to iterate over each element in an array.
Step 2: Identify what FOREACH does with array elements
It processes each element one by one, allowing actions inside the loop.
Final Answer:
It loops through each element of the array one by one. -> Option D
Quick Check:
FOREACH usage = loops array elements [OK]

Quick Trick: FOREACH processes array elements one at a time [OK]

Common Mistakes:

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What does the FOREACH statement do in PostgreSQL when used with arrays?