SQL keywords are the foundation of every query - they define how data is selected, inserted, updated, and organized. Whether you're writing a simple `SELECT` statement or managing transactions with `ROLLBACK` and `COMMIT`, knowing the precise meaning and usage of each keyword helps you write better, faster, and more reliable queries.
Learn about hundreds of common SQL keywords with our descriptions here!
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SQL keywords are predefined, reserved terms in SQL used to perform database operations like querying, updating, and managing data.
No, SQL keywords are generally case-insensitive (e.g., `SELECT` is the same as `select`), though capitalization is often used for readability.
You can, but it's discouraged. If you must, you'll need to quote them (e.g., `"SELECT"`), which can lead to confusion and bugs.
There are around 250+ reserved keywords across SQL dialects. Core keywords like `SELECT`, `WHERE`, and `JOIN` are common to most, while others are dialect-specific.
No. While many SQL keywords are standardized, each database (PostgreSQL, MySQL, SQL Server, etc.) adds its own extensions and variations.
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