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SQL JOIN Practice with Built-In Visualizer
Strengthen your SQL JOIN skills with problems covering INNER JOIN, LEFT JOIN, RIGHT JOIN, CROSS JOIN, self-joins, and multi-table joins. The built-in SQL Visualizer highlights exactly which rows match on each join condition, making it easy to spot missing or duplicate matches.
117
SQL Problems
Difficulty Breakdown
117 problems22 Easy(19%)
77 Medium(66%)
18 Hard(15%)
0 Expert(0%)
Skills You'll Practice
66 skillsadtechaggregationanti joinatmbankingboolean logicco purchasecoalescecomputed columncount distinctcross sellctedate arithmeticderived tabledistinctdistinct pairsexistsfilteringfintechfive table joinfood deliveryfour tablefour table joingroup byhealthcarein operatorinner joinis nulljoinsjuliandayleft joinloan paymentslodginglogisticsmobilitymulti column sortmulti tablenot existsnull checknull handlingnullable fknumeric thresholdorder bypaymentsreal estaterecommendationretailreturning customersroundsaasself joinsocialsortingstreamingstring concatstring concatenationsubquerysubstrtelecomthree tablethree table jointie breakerstwo tabletwo table joinwherewindow fns
All Problems117 total
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