Problems

Practice data engineering, algorithms, and schema design

#TitleLanguages
1Multi-Step Funnel Drop-off
MetaGoogle
SQLPandasPySpark
Hard20.2%
2Revenue Gap Analysis
AmazonDatabricksFlipkart
SQLPandasPySpark
Hard23.5%
3Customer Churn Analysis
AmazonDatabricksFlipkart
SQLPandasPySpark
Hard40.7%
4Suspicious Login Activity
Goldman SachsGoogleAmerican Express
SQLPandasPySpark
Hard36.6%
5Power Consumers
MicrosoftNVIDIA
SQLPandasPySpark
Hard19.1%
6Median Salary Computation
MicrosoftDatabricksDeloitte
SQLPandasPySpark
Hard62.0%
7Consecutive Transaction Growth
MicrosoftAmazonGoogle
SQLPandasPySpark
Hard32.6%
8Find the Quiet Students
NetflixGoogle
SQLPandasPySpark
Hard69.6%
9Sales Amount Split by Year
MetaAmazonFlipkart
SQLPandasPySpark
Hard40.3%
10Tournament Winners
AmazonFlipkart
SQLPandasPySpark
Hard59.8%
11Customer Spending Tiers
FlipkartAmazonFractal
SQLPandasPySpark
Medium85.6%
12Active Users Month Over Month
Goldman SachsHSBC
SQLPandasPySpark
Medium59.4%
13Warehouse Utilization
CoforgeGoogle
SQLPandasPySpark
Medium72.6%
14Product Sales in First Year
WiproAmazonFlipkart
SQLPandasPySpark
Medium57.9%
15Nth Highest Order Value Per Customer
CognizantAmazonFlipkart
SQLPandasPySpark
Medium49.3%
16Report Contiguous Dates
AccentureKPMG
SQLPandasPySpark
Medium76.3%
17Team Scores Comparison
MicrosoftEPAM
SQLPandasPySpark
Medium68.8%
18Longest Activity Streak
AccentureMicrosoft
SQLPandasPySpark
Medium63.6%
19Shipping Delay Categories
VirtusaSaama Technology
SQLPandasPySpark
Medium65.2%
20Event Attendance Rate
CoforgeFractal
SQLPandasPySpark
Medium52.7%
21Department Budget Variance
MicrosoftDeloitteSaama Technology
SQLPandasPySpark
Medium67.9%
22Grand Slam Titles
DatameticaHCL
SQLPandasPySpark
Medium56.0%
23Viewers Who Viewed Multiple Articles
NetflixAmerican Express
SQLPandasPySpark
Medium47.5%
24Unpopular Books
Publicis SapientDatametica
SQLPandasPySpark
Medium22.3%
25Apples and Oranges
JP Morgan ChaseGoldman Sachs
SQLPandasPySpark
Medium81.1%
26Monthly Active Merchants
Publicis SapientSynechron
SQLPandasPySpark
Medium59.7%
27Last Person to Fit in Elevator
NielsenAP Moller - Maersk
SQLPandasPySpark
Medium36.8%
28Count Salary Categories
MicrosoftHSBCDeloitte
SQLPandasPySpark
Medium34.9%
29Rank Scores
PwCGoogleAmazon
SQLPandasPySpark
Medium90.7%
30Consecutive Available Seats
Goldman SachsMeta
SQLPandasPySpark
Medium71.2%
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