SUNION, SINTER, SDIFF set operations in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get the union of sets 'set1' and 'set2'.

Redis

SUNION [1]

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

Aset1 set2

Bset1

Cset2

Dset3

Attempts:

3 left

💡 Hint

Common Mistakes

Using only one set name returns just that set's members.

Using commas instead of spaces between set names.

The SUNION command returns all unique members from both sets. You need to specify both set names separated by space.

2fill in blank

medium

Complete the code to find the intersection of sets 'fruits' and 'citrus'.

Redis

SINTER [1]

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

Afruits,citrus

Bfruits citrus

Cfruits

Dcitrus

Attempts:

3 left

💡 Hint

Common Mistakes

Using commas between set names causes syntax errors.

Providing only one set name returns that set's members.

SINTER returns members common to all given sets. The set names must be separated by spaces, not commas.

3fill in blank

hard

Fix the error in the code to get the difference of sets 'A' and 'B'.

Redis

SDIFF [1]

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

AA B

BB

CA

DA,B

Attempts:

3 left

💡 Hint

Common Mistakes

Using commas between set names causes errors.

Using only one set name returns that set's members.

SDIFF returns members in the first set that are not in the others. Set names must be separated by spaces, not commas.

4fill in blank

hard

Fill all three blanks to get the union of 'setX' and 'setY' and store it in 'resultSet'.

Redis

SUNIONSTORE [1] [2] [3]

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

AresultSet

BsetX

CsetY

DsetZ

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping destination and source sets.

Using a set name that doesn't exist.

SUNIONSTORE stores the union of given sets into the destination key. The first argument is the destination, followed by the sets.

5fill in blank

hard

Fill all three blanks to store the difference of 'set1' and 'set2' in 'diffSet'.

Redis

SDIFFSTORE [1] [2] [3]

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

AdiffSet

Bset1

Cset2

Dset3

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of arguments.

Using a wrong set name.

SDIFFSTORE stores the difference of the first set minus the others into the destination key. The order is destination, then sets.