ilya_panov
Savant
Top 0.9%
Member Nº 4687
Joined Aug 2026
SQL
Common Table Expressions
Window Deduplication
JSON Extraction
Python
Context Managers
Iteration
String Formatting
Spark
Catalyst Optimizer
Spark Execution Model
Shuffle Optimization
Data Modeling
Metric Additivity
Constraints
Indexing
Pipeline Architecture
Retry & Failure Handling
Solved
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1,104 runs in the past 26 weeksActive days: 28 · Max streak: 6
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Recent solves
Window Functions: Intermediate
SQL · medium · lesson
Window Functions: Intermediate
SQL · medium · lesson
Window Functions: Intermediate
SQL · medium · lesson
Window Functions: Intermediate, Multiple Windows Challenge 2
SQL · medium · lesson
Window Functions: Intermediate, Multiple Windows Challenge 1
SQL · medium · lesson
Window Functions: Intermediate, Multiple Windows Challenge 3
SQL · medium · lesson
Window Functions: Intermediate, NTILE and Bucketing Challenge 2
SQL · medium · lesson
Window Functions: Intermediate, NTILE and Bucketing Challenge 1
SQL · medium · lesson
Window Functions: Intermediate, NTILE and Bucketing Challenge 3
SQL · medium · lesson
Window Functions: Intermediate, Frame Specifications Challenge 3
SQL · medium · lesson