FreePremium85 ProblemsSQL
SQL Basic Queries & Filtering Practice
Start your SQL journey with SELECT, WHERE, ORDER BY, LIMIT, LIKE, BETWEEN, IN, IS NULL, and CASE WHEN. These foundational problems build the skills you need before tackling JOINs and window functions. The built-in SQL Visualizer shows how each filter narrows your result set.
85
SQL Problems
Difficulty Breakdown
85 problems65 Easy(76%)
18 Medium(21%)
2 Hard(2%)
0 Expert(0%)
Skills You'll Practice
45 skillsadtechaggregationbankingbetweenboolean flagboolean logiccomparison operatorscompliancecompound predicatescomputed columndata qualitydate timefilteringfintechfood deliveryfraud detectionhealthcarein operatorin subqueryis not nullis nulljoinslodginglogisticsmessagingmobilitynull handlingnullsnumeric thresholdor operatororder bypaymentspostgresqlreal estateretailroundsaassecuritysingle tablesocialsortingstreamingtelecomtie breakerswhere
All Problems85 total
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