unga_bunga
Savant
Top 0.7%
Member Nº 2461
Joined Jun 2026
SQL
Window Deduplication
Multiple WINDOWs
Array Transforms
Spark
Window Deduplication
Higher-Order Functions
Multiple Windows
Data Modeling
Self-Referential
Many-to-Many
One-to-One
Learned
SQL307
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Top 100
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Calculate a running total of transaction amounts ordered by date.
SQL · medium · lesson
Where You Stand
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Who Stayed
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User Age Ranking
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Alert Severity
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The Opening Run
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The Quiet Middle
SQL · easy · lesson