You want to find all integer ranges in a table intervals with column int_range (type int4range) that do NOT overlap with [10, 20). Which query correctly finds these non-overlapping ranges?

hard📝 Application Q15 of 15

PostgreSQL - Advanced Features

You want to find all integer ranges in a table intervals with column int_range (type int4range) that do NOT overlap with [10, 20). Which query correctly finds these non-overlapping ranges?

ASELECT * FROM intervals WHERE NOT (int_range && int4range(10, 20));

BSELECT * FROM intervals WHERE int_range && int4range(10, 20);

CSELECT * FROM intervals WHERE int_range <@ int4range(10, 20);

DSELECT * FROM intervals WHERE int_range @> int4range(10, 20);

Step-by-Step Solution

Solution:

Step 1: Understand the overlap operator &&
&& returns true if ranges overlap.
Step 2: Find non-overlapping ranges
To find ranges that do NOT overlap, negate the overlap condition with NOT (int_range && int4range(10, 20)).
Final Answer:
SELECT * FROM intervals WHERE NOT (int_range && int4range(10, 20)); -> Option A
Quick Check:
Negate overlap to find non-overlapping ranges [OK]

Quick Trick: Use NOT with && to find non-overlapping ranges [OK]

Common Mistakes:

Using && without NOT to find non-overlapping
Confusing <@ and @> operators
Using containment instead of overlap

Master "Advanced Features" in PostgreSQL

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions

You want to find all integer ranges in a table intervals with column int_range (type int4range) that do NOT overlap with [10, 20). Which query correctly finds these non-overlapping ranges?

Step 1: Understand the overlap operator &&

Step 2: Find non-overlapping ranges

Final Answer:

Quick Check:

Want More Practice?

Step 1: Understand the overlap operator `&&`