Last Updated: 6 Dec, 2025
Top 100 SQL Problems
We have collected a variety of SQL practice problems for each and every topic of SQL. You can appear in top tech companies by practicing consistently and precisely every day. Try to solve all SQL practice problems. To level up your SQL skills, you can solve advanced SQL interview questions from the real world. Simple SQL Solutions for each code are readily available.
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Categories
Problem Title
Exp
Difficulty
Avg. time
Attempted
Upvotes
80
Moderate
20 mins
24.4k
706
40
Easy
10 mins
30.9k
613
120
Hard
30 mins
16k
114
40
Easy
10 mins
22.1k
91
40
Easy
10 mins
59.9k
258
40
Easy
10 mins
25k
59
40
Easy
10 mins
21.1k
96
40
Easy
10 mins
11.6k
43
40
Easy
10 mins
17.5k
45
80
Moderate
20 mins
33.7k
64
120
Hard
30 mins
20.1k
33
40
Easy
10 mins
10.5k
73
40
Easy
10 mins
25.3k
40
120
Hard
30 mins
9.1k
28
200
Ninja
40 mins
21.3k
36
200
Ninja
40 mins
4.3k
14
120
Hard
30 mins
13.2k
16
120
Hard
30 mins
7.3k
12
200
Ninja
40 mins
3.8k
11
200
Ninja
40 mins
4k
10
200
Ninja
40 mins
2.4k
3
120
Hard
30 mins
5.7k
16
120
Hard
30 mins
5.4k
5
200
Ninja
40 mins
3.8k
15
80
Moderate
20 mins
8.9k
32
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Frequently Asked Questions
What is SQL?
The computer language SQL, or Structured Query Language, is used to store, manipulate, and retrieve data from relational databases. The preferred language for Relational Database Systems is SQL. SQL is the common database language used by all Relational Database Management Systems (RDMS), including MySQL, MS Access, Oracle, Sybase, Informix, Postgres, and SQL Server.
What common questions can be asked in SQL?
SQL is asked often in coding interviews. The most commonly asked about SQL is its syntax. Questions can be asked about what a certain keyword in SQL is and how it functions. Writing some SQL query to perform some operation in the database can also be asked.
How do you prepare a SQL question?
To prepare for a SQL question, one must be proficient with the basics of SQL. One must understand what SQL is and be thoroughly familiar with the syntax of the language, Then practice writing SQL queries to perform some operations in the database.
What are the important topics in SQL?
Some important topics in SQL are what are keys in SQL, what are views in SQL, SQL joins, normalization of the database, transactions in SQL, subqueries in SQL, cloning tables in SQL, and temporary tables in SQL. SQL syntax is also very important.