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7 kyu
SQL: Concatenating Columns
13,915PG1
Completed Languages:
6 kyu
SQL Basics: Simple PIVOTING data WITHOUT CROSSTAB
3,441marko-bekhta
Completed Languages:
5 kyu
SQL Basics: Group By Day
7,592jhoffner
Completed Languages:
5 kyu
SQL Basics: Simple VIEW
4,096matt c
Completed Languages:
6 kyu
SQL Basics: Simple WITH
9,254matt c
Completed Languages:
6 kyu
SQL Basics: Simple NULL handling
8,479matt c
Completed Languages:
5 kyu
Relational division: Find all movies two actors cast in together
7,785pmatseykanets
Completed Languages:
5 kyu
SQL Statistics: MIN, MEDIAN, MAX
6,020matt c
Completed Languages:
5 kyu
SQL Basics: Simple PIVOTING data
2,882matt c
Completed Languages:
5 kyu
SQL Tuning: Function Calls
1,947danicat
Completed Languages:
4 kyu
Challenge: Two actors who cast together the most
3,407pmatseykanets
Completed Languages:
5 kyu
Count IP Addresses
30,780xDranik
Completed Languages:
5 kyu
Count Weekdays
1,527pmatseykanets
Completed Languages:
5 kyu
Using Window Functions To Get Top N per Group
2,985pmatseykanets
Completed Languages:
6 kyu
Calculating Batting Average
5,594AdamRFSwayze
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