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Practical

SQL Practice Lab

Skip the theory and dive straight into the engine. This "Practice Only" lab provides all 60+ technical challenges, the 240k-row dataset, and the expert solution key.

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Challenge Categories

01

Identity & Structure Challenges (1-5)

Primary Key verification and industry mapping exercises.

02

Extraction & Filtering Drills (6-15)

Complex WHERE clauses and high-exposure credit monitoring.

03

Aggregation & Stats Lab (16-25)

Merchant volume analysis and fraud latency calculations.

04

Multi-Table Join Scenarios (26-35)

Verification of user-card relationships and alert routing.

05

Data Cleaning & CASE Logic (36-40)

Risk categorization and priority flagging implementations.

06

Advanced Analytics (41-50)

Window Functions, rolling averages, and fraud velocity detection.

07

Specialized & Capstone (51-60)

JSONB extraction, SLA monitoring, and full pipeline fraud audits.

Lab Info

Dataset

240,000 Row B2B Simulation

Challenges

60 Unique Scenarios

$27.99

Best For

  • 02Career switchers who need real reps against a fintech dataset.
  • 03Non-technical pros ready to write their own queries instead of filing tickets.