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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.
120
SQL Problems
Difficulty Breakdown
120 problems22 Easy(18%)
81 Medium(68%)
17 Hard(14%)
0 Expert(0%)
Skills You'll Practice
66 skillsadtechaggregationanti joinatmbankingboolean logiccase statementcleaning transformcoalescecomputed columncount distinctcross selldata warehousedate arithmeticdate timederived tabledistinctexistsfilteringfintechfive table joinfood deliveryfour tablefour table joingroup byhealthcarein operatorinner joinis nulljoinsjuliandayleft joinloan paymentslodginglogisticsmobilitymulti column sortmulti tablenot existsnull checknull handlingnullable fknumeric thresholdorder bypaymentsreal estateretailroundsaassecurityself joinsocialsortingstreamingstring concatstring concatenationsubquerysubstrtelecomthree tablethree table jointie breakerstwo tabletwo table joinwherewindow fns
All Problems120 total
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