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Sql joins
Problem Score Companies Time Status
Performance Improvement 50
29:00
Minimum GPA 50
34:14
Number of offers 50
31:04
Neutral Reviewers 100
24:58
Movie Character 100
35:00
Short Films 100
31:20
Sql sub queries
Problem Score Companies Time Status
Study Selection 50
9:08
Study Update 50
17:37
Study Deletion 50
11:42
Job Offers 2.0 50
24:18
Actors and their Movies 100
38:27
Basic select
Problem Score Companies Time Status
Town Selection 50
7:59
Town Queries 50
5:19
Student Query 50
7:45
Country Filtration 50
6:05
Information Selector 50
3:45
Town Of Threes 50
8:21
Aggregation
Problem Score Companies Time Status
Firefighter's Average 50
10:11
Firefighter's Sum 50
6:14
Largest Difference 50
13:08
Distance Maximizer 50
15:34
Euclid's Distance 50
17:11
Big Salary 50
19:52
5'th Highest Marks 50
22:46
Famous Books 50
25:37
Chess Tournament 50
28:16
NULL sorting 50
22:32
I hate Vowels 50
25:06
Birthdays 50
16:58
Class Average 50
18:30
Tournament 2.0 50
25:11
Job Offer 50
22:29
Next And Previous 50
21:27
Advanced select
Problem Score Companies Time Status
Conditional Work 50
20:52
Role Ordering 50
27:11
Role Player 50
14:43
Role Counter 50
14:31
Vowel Country 50
13:54
Basic join
Problem Score Companies Time Status
Engineers Joined 50
24:22
Many Tables 50
20:12
Top Performer 50
26:52
Low and High Grades 50
21:24
Same Countries 50
21:15