Mysql keywords and meanings. NOT NULL The keywords NOT NULL can be declared in the definition of a MySQL column. 0, metadata is physically located in InnoDB file-per-table tablespace files in the mysql database directory. This is going to be ongoing list that will be constantly updated. Understand MySQL keywords, their role in queries, and practical examples for better database management. 7 Comments Most nonreserved keywords are permitted as identifiers without quoting. The following table shows all keywords and reserved words available in MySQL Server. This beginner-friendly guide explains their use, syntax, and examples to help you master SQL querying. The following list shows the keywords and reserved words in MySQL 8. They are used to perform various operations within the database, such as creating tables, inserting data, querying the database, updating records, and more. The data will not be entered This SQL keywords reference contains the reserved words in SQL. For more information on reserved words and their impact on your queries, see Keywords and Reserved Words, in the MySQL Manual. 4 User-Defined Variables 11. 3 Restricted Keywords, for listings of these keywords. Like any programming language, MySQL has its own set of reserved words. Reserved words are specific terms or keywords with predefined meanings within the database system. See MySQL 9. At some point, you might upgrade to a higher version, so it is a good idea to have a look at future reserved words, too. . Reserved keywords are marked with (R). Jul 23, 2025 · MySQL is a popular and widely used Relational Database Management System. The following list shows the keywords and reserved words in MySQL 8. Nov 20, 2024 · Let's discover all the SQL reserved words in MySQL, PostgreSQL, SQL Server, and Oracle to become a master of SQL syntax. 1 Literal Values 11. 6 Query Attributes 11. Some keywords which are otherwise considered nonreserved are restricted from use as unquoted identifiers for roles, stored program labels, or, in some cases, both. 5 Expressions 11. Keywords define the structure and syntax of MySQL queries. Jul 18, 2024 · In MySQL, keywords are predefined words that carry a special meaning. 4, along with changes to individual words from version to version. This section contains information on the keywords and reserved words within the server when creating and submitting queries to the system. Table of Contents 11. Learn SQL keywords like SELECT, WHERE, JOIN, and more. 3 Keywords and Reserved Words 11. Declaring a column NOT NULL means that the data entered into the rows of this column cannot be NULL, meaning there has to be a value entered into it. The table contains these columns: For the MySQL data dictionary, introduced in MySQL 8. In addition, _FILENAME is reserved. MySQL Keywords In this article, we go over various MySQL keywords. 2 Schema Object Names 11. It is very important to know the reserved words to avoid conflicts in the execution of the queries. This SQL keywords reference contains the reserved words in SQL. 0, along with changes to individual words from version to version. oskkn spekq vcgeks firsct jryg igphbhi xqqry vjtxg yzpos etoa