JavaScript
Python
PHP
SQL
SQL coding challenges
SQL Fundamentals
A set of coding problems that cover the basic syntax and features of the programming language.
1. Retrieving data
Selecting records from a table
Ordering results
Selecting distinct values from a table
Specifying conditions using the WHERE clause
Counting the number of rows in a table
Selecting specific columns from a table
Matching strings using LIKE operator
2. Manipulating data
Delting records from a table
Inserting records to a table
Updating records