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5 kyu
Counting overlapping events
1,120qgppl
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8 kyu
Return Negative
345,943Deantwo
Completed Languages:
5 kyu
SQL Basics: Simple VIEW
3,983matt c
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6 kyu
SQL Basics: Simple WITH
8,902matt c
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5 kyu
SQL Basics: Group By Day
7,347jhoffner
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SQL Statistics: MIN, MEDIAN, MAX
5,825matt c
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4 kyu
Dealing With Messy Data
1,240danicat
Completed Languages:
5 kyu
Relational division: Find all movies two actors cast in together
7,501pmatseykanets
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6 kyu
SQL Basics: Simple UNION ALL
12,012matt c
Completed Languages:
6 kyu
SQL Basics: Simple IN
12,751matt c
Completed Languages:
6 kyu
SQL Basics: Simple NULL handling
8,161matt c
Completed Languages:
7 kyu
SQL: Concatenating Columns
13,437PG1
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7 kyu
Easy SQL: Absolute Value and Log to Base
7,017PG1
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5 kyu
SQL Basics: Simple Hierarchical structure
2,819matt c
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6 kyu
SQL Basics: Simple PIVOTING data WITHOUT CROSSTAB
3,346marko-bekhta
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