sql Coding Problems

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

2292 problems in this topic

#	Title	Topics	Acceptance	Pts	Difficulty
1701	PostgreSQL SERIAL and REFERENCES #40	PostgreSQL — DDL & constraints postgresql coding-practice	—	40	Hard	Solve
1702	T-SQL PARTITION BY dept #40	SQL Server — Window functions sqlserver coding-practice	—	30	Medium	Solve
1703	CREATE INDEX #41	SQL — Indexes & performance sql coding-practice	—	30	Medium	Solve
1704	MySQL index on salary #41	MySQL — Indexes & EXPLAIN mysql coding-practice	—	30	Medium	Solve
1705	PostgreSQL SERIAL and REFERENCES #41	PostgreSQL — DDL & constraints postgresql coding-practice	—	30	Medium	Solve
1706	T-SQL PARTITION BY dept #41	SQL Server — Window functions sqlserver coding-practice	—	40	Hard	Solve
1707	CREATE INDEX #42	SQL — Indexes & performance sql coding-practice	—	30	Medium	Solve
1708	MySQL index on salary #42	MySQL — Indexes & EXPLAIN mysql coding-practice	—	30	Medium	Solve
1709	PostgreSQL SERIAL and REFERENCES #42	PostgreSQL — DDL & constraints postgresql coding-practice	—	30	Medium	Solve
1710	T-SQL PARTITION BY dept #42	SQL Server — Window functions sqlserver coding-practice	—	30	Medium	Solve
1711	CREATE INDEX #43	SQL — Indexes & performance sql coding-practice	—	40	Hard	Solve
1712	MySQL index on salary #43	MySQL — Indexes & EXPLAIN mysql coding-practice	—	40	Hard	Solve
1713	PostgreSQL SERIAL and REFERENCES #43	PostgreSQL — DDL & constraints postgresql coding-practice	—	40	Hard	Solve
1714	T-SQL PARTITION BY dept #43	SQL Server — Window functions sqlserver coding-practice	—	20	Easy	Solve
1715	CREATE INDEX #44	SQL — Indexes & performance sql coding-practice	—	30	Medium	Solve
1716	MySQL index on salary #44	MySQL — Indexes & EXPLAIN mysql coding-practice	—	30	Medium	Solve
1717	PostgreSQL SERIAL and REFERENCES #44	PostgreSQL — DDL & constraints postgresql coding-practice	—	30	Medium	Solve
1718	T-SQL PARTITION BY dept #44	SQL Server — Window functions sqlserver coding-practice	—	30	Medium	Solve
1719	CREATE INDEX #45	SQL — Indexes & performance sql coding-practice	—	30	Medium	Solve
1720	MySQL index on salary #45	MySQL — Indexes & EXPLAIN mysql coding-practice	—	30	Medium	Solve
1721	PostgreSQL SERIAL and REFERENCES #45	PostgreSQL — DDL & constraints postgresql coding-practice	—	30	Medium	Solve
1722	T-SQL PARTITION BY dept #45	SQL Server — Window functions sqlserver coding-practice	—	40	Hard	Solve
1723	CREATE INDEX #46	SQL — Indexes & performance sql coding-practice	—	40	Hard	Solve
1724	MySQL index on salary #46	MySQL — Indexes & EXPLAIN mysql coding-practice	—	40	Hard	Solve
1725	PostgreSQL SERIAL and REFERENCES #46	PostgreSQL — DDL & constraints postgresql coding-practice	—	40	Hard	Solve
1726	T-SQL PARTITION BY dept #46	SQL Server — Window functions sqlserver coding-practice	—	30	Medium	Solve
1727	CREATE INDEX #47	SQL — Indexes & performance sql coding-practice	—	30	Medium	Solve
1728	MySQL index on salary #47	MySQL — Indexes & EXPLAIN mysql coding-practice	—	30	Medium	Solve
1729	PostgreSQL SERIAL and REFERENCES #47	PostgreSQL — DDL & constraints postgresql coding-practice	—	30	Medium	Solve
1730	T-SQL PARTITION BY dept #47	SQL Server — Window functions sqlserver coding-practice	—	20	Easy	Solve
1731	CREATE INDEX #48	SQL — Indexes & performance sql coding-practice	—	30	Medium	Solve
1732	MySQL index on salary #48	MySQL — Indexes & EXPLAIN mysql coding-practice	—	30	Medium	Solve
1733	PostgreSQL SERIAL and REFERENCES #48	PostgreSQL — DDL & constraints postgresql coding-practice	—	30	Medium	Solve
1734	T-SQL PARTITION BY dept #48	SQL Server — Window functions sqlserver coding-practice	—	30	Medium	Solve
1735	CREATE INDEX #49	SQL — Indexes & performance sql coding-practice	—	40	Hard	Solve
1736	MySQL index on salary #49	MySQL — Indexes & EXPLAIN mysql coding-practice	—	40	Hard	Solve
1737	PostgreSQL SERIAL and REFERENCES #49	PostgreSQL — DDL & constraints postgresql coding-practice	—	40	Hard	Solve
1738	T-SQL PARTITION BY dept #49	SQL Server — Window functions sqlserver coding-practice	—	40	Hard	Solve
1739	CREATE INDEX #50	SQL — Indexes & performance sql coding-practice	—	30	Medium	Solve
1740	MySQL index on salary #50	MySQL — Indexes & EXPLAIN mysql coding-practice	—	30	Medium	Solve
1741	PostgreSQL SERIAL and REFERENCES #50	PostgreSQL — DDL & constraints postgresql coding-practice	—	30	Medium	Solve
1742	T-SQL PARTITION BY dept #50	SQL Server — Window functions sqlserver coding-practice	—	30	Medium	Solve
1743	T-SQL PARTITION BY dept #51	SQL Server — Window functions sqlserver coding-practice	—	20	Easy	Solve
1744	T-SQL PARTITION BY dept #52	SQL Server — Window functions sqlserver coding-practice	—	30	Medium	Solve
1745	T-SQL PARTITION BY dept #53	SQL Server — Window functions sqlserver coding-practice	—	40	Hard	Solve
1746	T-SQL PARTITION BY dept #54	SQL Server — Window functions sqlserver coding-practice	—	30	Medium	Solve
1747	T-SQL PARTITION BY dept #55	SQL Server — Window functions sqlserver coding-practice	—	20	Easy	Solve
1748	T-SQL PARTITION BY dept #56	SQL Server — Window functions sqlserver coding-practice	—	30	Medium	Solve
1749	T-SQL PARTITION BY dept #57	SQL Server — Window functions sqlserver coding-practice	—	40	Hard	Solve
1750	T-SQL PARTITION BY dept #58	SQL Server — Window functions sqlserver coding-practice	—	30	Medium	Solve

Problem of the day

Graph Valid Tree

Medium · +15 pts

Solve today

Weekly leaderboard

View all

Be the first to climb the board this week.

Company sheets

Toolliyo unique — practice by hiring company.

Google Amazon Microsoft Meta Apple Netflix TikTok LinkedIn Nvidia Uber

Browse all companies

Interview path

DSA Interview 150 All roadmaps 3,700+ Interview Q&A

Problems explorer