Solution:Step 1: Understand the ALL conditionThe condition price > ALL (subquery) means price must be greater than every min_price returned.Step 2: Interpret the query resultOnly products with price higher than all discount min_prices are selected.Final Answer:Product ids with price greater than eve

[Solved] Given the tables:products(id, price)anddiscounts(min_price)What does this query return?SELECT id FROM products WHERE price > ALL (SELECT min_price FROM discounts); | PostgreSQL

PostgreSQL - Subqueries in PostgreSQL

Given the tables:
products(id, price)
and
discounts(min_price)
What does this query return?

SELECT id FROM products WHERE price > ALL (SELECT min_price FROM discounts);

AAll product ids regardless of price.

BProduct ids with price greater than every min_price in discounts.

CProduct ids with price equal to any min_price in discounts.

DProduct ids with price greater than at least one min_price in discounts.

Step-by-Step Solution

Solution:

Step 1: Understand the ALL condition
The condition price > ALL (subquery) means price must be greater than every min_price returned.
Step 2: Interpret the query result
Only products with price higher than all discount min_prices are selected.
Final Answer:
Product ids with price greater than every min_price in discounts. -> Option B
Quick Check:
price > ALL means greater than all values [OK]

Quick Trick: ALL means condition holds for every subquery value [OK]

Common Mistakes:

Confusing ALL with ANY or SOME
Thinking it returns products with price greater than some min_price
Assuming it returns all products

Master "Subqueries in PostgreSQL" in PostgreSQL

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

Given the tables:

Step 1: Understand the ALL condition

Step 2: Interpret the query result

Final Answer:

Quick Check:

Want More Practice?