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6 kyu
SQL Basics: Top 10 customers by total payments amount
13,400jhoffner
Completed Languages:
5 kyu
SQL Tuning: Function Calls
1,878danicat
Completed Languages:
4 kyu
Dealing With Messy Data
1,240danicat
Completed Languages:
5 kyu
SQL Basics: Group By Day
7,345jhoffner
Completed Languages:
5 kyu
Count Weekdays
1,460pmatseykanets
Completed Languages:
5 kyu
Using Window Functions To Get Top N per Group
2,852pmatseykanets
Completed Languages:
5 kyu
Counting overlapping events
1,119qgppl
Completed Languages:
6 kyu
Calculating Batting Average
5,460AdamRFSwayze
Completed Languages:
6 kyu
SQL Basics: Simple FULL TEXT SEARCH
4,479matt c
Completed Languages:
5 kyu
SQL Statistics: MIN, MEDIAN, MAX
5,825matt c
Completed Languages:
6 kyu
SQL Basics: Simple IN
12,746matt c
Completed Languages:
4 kyu
Challenge: Two actors who cast together the most
3,279pmatseykanets
Completed Languages:
5 kyu
Count IP Addresses
28,477xDranik
Completed Languages:
5 kyu
Relational division: Find all movies two actors cast in together
7,498pmatseykanets
Completed Languages:
8 kyu
Returning Strings
226,422Aweson1
Completed Languages:
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