ZRANGEBYSCORE for score-based queries in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get all members with scores between 10 and 20.

Redis

ZRANGEBYSCORE mysortedset [1] 20

Drag options to blanks, or click blank then click option'

A10

B5

C30

D-inf

Attempts:

3 left

💡 Hint

Common Mistakes

Using a score lower than 10 will include unwanted members.

Using a string instead of a number for the score.

The command ZRANGEBYSCORE mysortedset 10 20 returns all members with scores from 10 to 20 inclusive.

2fill in blank

medium

Complete the code to get members with scores greater than or equal to 15.

Redis

ZRANGEBYSCORE mysortedset [1] +inf

Drag options to blanks, or click blank then click option'

A15

B(15

C-inf

D20

Attempts:

3 left

💡 Hint

Common Mistakes

Using (15 excludes score 15 itself.

Using -inf will include all scores.

Using ZRANGEBYSCORE mysortedset 15 +inf returns members with scores 15 and above.

3fill in blank

hard

Fix the error in the code to exclude members with score 10 but include scores above 10.

Redis

ZRANGEBYSCORE mysortedset [1] 20

Drag options to blanks, or click blank then click option'

A[10

B10

C(10

D-inf

Attempts:

3 left

💡 Hint

Common Mistakes

Using 10 includes score 10.

Using [10 is invalid syntax.

Using (10 excludes score 10 but includes scores greater than 10.

4fill in blank

hard

Fill both blanks to get members with scores strictly between 5 and 15.

Redis

ZRANGEBYSCORE mysortedset [1] [2]

Drag options to blanks, or click blank then click option'

A(5

B5

C(15

D15

Attempts:

3 left

💡 Hint

Common Mistakes

Using 5 or 15 includes those scores.

Using brackets [ ] is invalid in Redis score ranges.

Using (5 and (15 excludes scores 5 and 15, returning members strictly between those scores.

5fill in blank

hard

Fill all three blanks to get members with scores from 0 (inclusive) to 100 (exclusive), limiting to 10 results starting from the second member (offset 1).

Redis

ZRANGEBYSCORE mysortedset [1] [2] LIMIT [3] 10

Drag options to blanks, or click blank then click option'

A0

B100

C(100

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using 100 includes score 100.

Using LIMIT 0 10 starts from first member, not second.

Using 0 as offset starts from the first member.

The command ZRANGEBYSCORE mysortedset 0 (100 LIMIT 1 10 returns members with scores from 0 inclusive to less than 100, starting from the second member (offset 1), limiting to 10 results.