SUNIONSTORE for storing results in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to store the union of sets 'set1' and 'set2' into 'resultSet'.

Redis

SUNIONSTORE [1] set1 set2

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

AresultSet

Bset1

Cset2

DunionSet

Attempts:

3 left

💡 Hint

Common Mistakes

Using one of the source sets as the destination, which overwrites original data.

Forgetting to specify the destination key.

The SUNIONSTORE command stores the union of the given sets into the specified destination key. Here, 'resultSet' is the destination.

2fill in blank

medium

Complete the code to store the union of 'usersOnline' and 'usersActive' into 'allUsers'.

Redis

SUNIONSTORE [1] usersOnline usersActive

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

AusersOnline

BactiveOnline

CusersActive

DallUsers

Attempts:

3 left

💡 Hint

Common Mistakes

Using one of the source keys as the destination, causing data loss.

Choosing a destination key that does not clearly represent the union.

The destination key 'allUsers' will hold the union of 'usersOnline' and 'usersActive'.

3fill in blank

hard

Fix the error in the command to store the union of 'setA' and 'setB' into 'unionSet'.

Redis

SUNIONSTORE setA [1] setB

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

AunionSet

BsetB

CsetA

DresultSet

Attempts:

3 left

💡 Hint

Common Mistakes

Placing the destination key in the wrong position.

Using a source set as the destination key.

The first argument after SUNIONSTORE must be the destination key. Here, 'unionSet' is the correct destination to store the union.

4fill in blank

hard

Fill both blanks to store the union of 'group1' and 'group2' into 'combinedGroup'.

Redis

SUNIONSTORE [1] [2] group2

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

AcombinedGroup

Bgroup1

Cgroup2

DunionGroup

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the destination and source keys.

Using the same key for destination and source.

The first blank is the destination key 'combinedGroup'. The second blank is the first source set 'group1'. The command stores the union of 'group1' and 'group2' into 'combinedGroup'.

5fill in blank

hard

Fill all three blanks to store the union of 'teamA', 'teamB', and 'teamC' into 'allTeams'.

Redis

SUNIONSTORE [1] [2] [3] teamC

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

AallTeams

BteamA

CteamB

DcombinedTeams

Attempts:

3 left

💡 Hint

Common Mistakes

Using source keys as the destination.

Incorrect order of source sets.

The first blank is the destination key 'allTeams'. The second and third blanks are the first two source sets 'teamA' and 'teamB'. The command unions 'teamA', 'teamB', and 'teamC' into 'allTeams'.