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Sql joins
Problem Score Companies Time Status
Performance Improvement 50
27:46
Minimum GPA 50
31:40
Number of offers 50
29:30
Neutral Reviewers 100
24:55
Movie Character 100
34:52
Short Films 100
31:10
Sql sub queries
Problem Score Companies Time Status
Study Selection 50
9:01
Study Update 50
17:16
Study Deletion 50
11:29
Job Offers 2.0 50
23:22
Actors and their Movies 100
38:20
Basic select
Problem Score Companies Time Status
Town Selection 50
7:48
Town Queries 50
5:16
Student Query 50
7:32
Country Filtration 50
6:03
Information Selector 50
3:37
Town Of Threes 50
8:14
Aggregation
Problem Score Companies Time Status
Firefighter's Average 50
9:59
Firefighter's Sum 50
6:12
Largest Difference 50
12:47
Distance Maximizer 50
15:04
Euclid's Distance 50
16:36
Big Salary 50
19:33
5'th Highest Marks 50
22:22
Famous Books 50
24:29
Chess Tournament 50
27:04
NULL sorting 50
21:58
I hate Vowels 50
26:27
Birthdays 50
16:05
Class Average 50
17:28
Tournament 2.0 50
25:31
Job Offer 50
22:03
Next And Previous 50
20:47
Advanced select
Problem Score Companies Time Status
Conditional Work 50
20:17
Role Ordering 50
27:15
Role Player 50
14:15
Role Counter 50
13:32
Vowel Country 50
13:19
Basic join
Problem Score Companies Time Status
Engineers Joined 50
24:00
Many Tables 50
19:36
Top Performer 50
24:56
Low and High Grades 50
20:12
Same Countries 50
19:43