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7 kyu
SQL: Concatenating Columns
13,288PG1
Completed Languages:
6 kyu
SQL Basics: Simple PIVOTING data WITHOUT CROSSTAB
3,301marko-bekhta
Completed Languages:
5 kyu
SQL Basics: Group By Day
7,278jhoffner
Completed Languages:
5 kyu
SQL Basics: Simple VIEW
3,928matt c
Completed Languages:
6 kyu
SQL Basics: Simple WITH
8,759matt c
Completed Languages:
6 kyu
SQL Basics: Simple NULL handling
8,047matt c
Completed Languages:
5 kyu
Relational division: Find all movies two actors cast in together
7,400pmatseykanets
Completed Languages:
5 kyu
SQL Statistics: MIN, MEDIAN, MAX
5,758matt c
Completed Languages:
5 kyu
SQL Basics: Simple PIVOTING data
2,751matt c
Completed Languages:
5 kyu
SQL Tuning: Function Calls
1,853danicat
Completed Languages:
4 kyu
Challenge: Two actors who cast together the most
3,234pmatseykanets
Completed Languages:
5 kyu
Count IP Addresses
27,658xDranik
Completed Languages:
5 kyu
Count Weekdays
1,438pmatseykanets
Completed Languages:
5 kyu
Using Window Functions To Get Top N per Group
2,799pmatseykanets
Completed Languages:
6 kyu
Calculating Batting Average
5,401AdamRFSwayze
Completed Languages:
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