SQL Tutorials

Learn about SQL DDL commands and how they help define and manage the structure of database objects.

Database normalization is an important process used to organize and structure relational databases. This process ensures that data is stored in a way that minimizes redundancy, simplifies querying, and improves data integrity.

Set operations in SQL are techniques for combining or comparing the results of two or more SELECT statements.

Learn more about Data Manipulation Language (DML), how it compares to DQL and DDL, and master DML commands including SELECT, INSERT, DELETE, and UPDATE.

An introductory article on how to perform machine learning using SQL statements in PostgresML.

Unlock the power of SQL CONTAINS for advanced text searches. Dive into logical operators, proximity searches, and wildcard uses for precise data analysis.

Master SQL's NOT IN operator with this beginner's guide. Learn to filter data effectively, avoid common pitfalls, and explore efficient alternatives

Discover everything you need to know about LMQL, short for Language Models Query Language, an innovative programming language for LLMs.

Unlock the power of SQL NOT EQUAL with our expert guide. Learn to refine data queries with practical examples and optimization tips for better analysis.

Learn how to use the SQL ROUND function in this tutorial. It covers the implementation of the ROUND function in Oracle, MySQL, PostgreSQL, and SQL Server.

Learn how to set up and configure MySQL database inside Docker containers. The tutorial includes concepts such as connecting to MySQL servers, running MySQL clients to connect to containers, and so on.

Learn how to easily select multiple columns from a database table in SQL, or select all columns from a table in one simple query.