sql Coding Problems

All C# Programs — Data Structures 167 DSA — Graphs 105 DSA — Strings 105 DSA — Stacks & Queues 105 DSA — Sorting 105 DSA — Hashing 105 C# Programs — Strings 105 DSA — Arrays 105 C# Programs — Arrays 105 DSA — Dynamic Programming 105 DSA — Two Pointers 105 DSA — Binary Search 105 DSA — Trees 105 C# Programs — LINQ 104 C# Programs — OOP 103 C# Programs — Sorting 103 C# Programs — Collections 103 SQL Server — Window functions 101 SQL Server — Subqueries 101 SQL Server — Aggregates & GROUP BY 101 SQL Server — JOINs 101 SQL Server — T-SQL procedures 101 SQL Server — Indexes & plans 101 SQL Server — WHERE & filtering 101 SQL Server — DDL & constraints 101 SQL Server — CTEs 101 C# Programs — Inheritance 101 C# Programs — Interfaces 101

2292 problems in this topic

#	Title	Topics	Acceptance	Pts	Difficulty
901	Avg by category #28	SQL — Aggregates & GROUP BY sql coding-practice	—	40	Hard	Solve
902	MySQL AVG salary by dept #28	MySQL — Aggregates & GROUP BY mysql coding-practice	—	40	Hard	Solve
903	PostgreSQL GROUP BY HAVING #28	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	40	Hard	Solve
904	T-SQL AVG salary by department #28	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	30	Medium	Solve
905	Avg by category #29	SQL — Aggregates & GROUP BY sql coding-practice	—	30	Medium	Solve
906	MySQL AVG salary by dept #29	MySQL — Aggregates & GROUP BY mysql coding-practice	—	30	Medium	Solve
907	PostgreSQL GROUP BY HAVING #29	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	30	Medium	Solve
908	T-SQL AVG salary by department #29	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	40	Hard	Solve
909	Avg by category #30	SQL — Aggregates & GROUP BY sql coding-practice	—	30	Medium	Solve
910	MySQL AVG salary by dept #30	MySQL — Aggregates & GROUP BY mysql coding-practice	—	30	Medium	Solve
911	PostgreSQL GROUP BY HAVING #30	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	30	Medium	Solve
912	T-SQL AVG salary by department #30	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	30	Medium	Solve
913	Avg by category #31	SQL — Aggregates & GROUP BY sql coding-practice	—	40	Hard	Solve
914	MySQL AVG salary by dept #31	MySQL — Aggregates & GROUP BY mysql coding-practice	—	40	Hard	Solve
915	PostgreSQL GROUP BY HAVING #31	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	40	Hard	Solve
916	T-SQL AVG salary by department #31	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	20	Easy	Solve
917	Avg by category #32	SQL — Aggregates & GROUP BY sql coding-practice	—	30	Medium	Solve
918	MySQL AVG salary by dept #32	MySQL — Aggregates & GROUP BY mysql coding-practice	—	30	Medium	Solve
919	PostgreSQL GROUP BY HAVING #32	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	30	Medium	Solve
920	T-SQL AVG salary by department #32	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	30	Medium	Solve
921	Avg by category #33	SQL — Aggregates & GROUP BY sql coding-practice	—	30	Medium	Solve
922	MySQL AVG salary by dept #33	MySQL — Aggregates & GROUP BY mysql coding-practice	—	30	Medium	Solve
923	PostgreSQL GROUP BY HAVING #33	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	30	Medium	Solve
924	T-SQL AVG salary by department #33	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	40	Hard	Solve
925	Avg by category #34	SQL — Aggregates & GROUP BY sql coding-practice	—	40	Hard	Solve
926	MySQL AVG salary by dept #34	MySQL — Aggregates & GROUP BY mysql coding-practice	—	40	Hard	Solve
927	PostgreSQL GROUP BY HAVING #34	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	40	Hard	Solve
928	T-SQL AVG salary by department #34	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	30	Medium	Solve
929	Avg by category #35	SQL — Aggregates & GROUP BY sql coding-practice	—	30	Medium	Solve
930	MySQL AVG salary by dept #35	MySQL — Aggregates & GROUP BY mysql coding-practice	—	30	Medium	Solve
931	PostgreSQL GROUP BY HAVING #35	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	30	Medium	Solve
932	T-SQL AVG salary by department #35	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	20	Easy	Solve
933	Avg by category #36	SQL — Aggregates & GROUP BY sql coding-practice	—	30	Medium	Solve
934	MySQL AVG salary by dept #36	MySQL — Aggregates & GROUP BY mysql coding-practice	—	30	Medium	Solve
935	PostgreSQL GROUP BY HAVING #36	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	30	Medium	Solve
936	T-SQL AVG salary by department #36	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	30	Medium	Solve
937	Avg by category #37	SQL — Aggregates & GROUP BY sql coding-practice	—	40	Hard	Solve
938	MySQL AVG salary by dept #37	MySQL — Aggregates & GROUP BY mysql coding-practice	—	40	Hard	Solve
939	PostgreSQL GROUP BY HAVING #37	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	40	Hard	Solve
940	T-SQL AVG salary by department #37	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	40	Hard	Solve
941	Avg by category #38	SQL — Aggregates & GROUP BY sql coding-practice	—	30	Medium	Solve
942	MySQL AVG salary by dept #38	MySQL — Aggregates & GROUP BY mysql coding-practice	—	30	Medium	Solve
943	PostgreSQL GROUP BY HAVING #38	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	30	Medium	Solve
944	T-SQL AVG salary by department #38	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	30	Medium	Solve
945	Avg by category #39	SQL — Aggregates & GROUP BY sql coding-practice	—	30	Medium	Solve
946	MySQL AVG salary by dept #39	MySQL — Aggregates & GROUP BY mysql coding-practice	—	30	Medium	Solve
947	PostgreSQL GROUP BY HAVING #39	PostgreSQL — Aggregates & GROUP BY postgresql coding-practice	—	30	Medium	Solve
948	T-SQL AVG salary by department #39	SQL Server — Aggregates & GROUP BY sqlserver coding-practice	—	20	Easy	Solve
949	Avg by category #40	SQL — Aggregates & GROUP BY sql coding-practice	—	40	Hard	Solve
950	MySQL AVG salary by dept #40	MySQL — Aggregates & GROUP BY mysql coding-practice	—	40	Hard	Solve

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Graph Valid Tree

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