Comments are used to explain sections of SQL statements, or to prevent execution of SQL statements. Single line comments start with --. Any text between -- and the end of the line will be ignored (will not be executed). The following example …

Feb 1, 2012 · "A comment for a column can be specified with the COMMENT option. The comment is displayed by the SHOW CREATE TABLE and SHOW FULL COLUMNS statements. This option is operational as of MySQL 4.1.

Jan 25, 2024 · In this guide, we’ll explore the different ways to add comments to MySQL statements, offer a variety of examples from basic to advanced, and show the implications that comments might have on your code and its execution.

MySQL Server supports three comment styles: From a # character to the end of the line. From a -- sequence to the end of the line. In MySQL, the -- (double-dash) comment style requires the second dash to be followed by at least one whitespace or control character, such …

Apr 1, 2019 · Comments can be added without causing table reconstruction. You can use MODIFY COLUMN to do this. Just do... substituting: YourTable with the name of your table. your_column with the name of your comment.

Mar 30, 2022 · Syntax of MySQL Comments. Following are three syntaxes to use comments in MySQL. Syntax 1. Comment Using # SELECT * FROM table; #this is a select statement comment Code language: SQL (Structured Query Language) (sql) Here, everything after the # sign is interpreted as a comment.

MySQL supports two types of single-line comments: You can add a single-line comment using two hyphens (--) followed by your comment text. Any text following -- on the same line is treated as a comment. For example: Alternatively, you can use the …

This MySQL tutorial explains how to use comments within your SQL statements in MySQL with syntax and examples. Did you know that you can place comments within your SQL statements in MySQL? These comments can appear on a single line or span across multiple lines.

Nov 7, 2020 · Inside this article we will see how to add comments on columns of MySQL Table. Let’s get started. We have two options available to add comments on columns. Options are –. Manual adding comments. By using these we can some extra informative information to columns for better vision over it’s role.

To create a single-line comment in MySQL, use two hyphens (--) followed by your comment text. In the following query, we are using a single line comment to write a text. Multi-line comments in MySQL are used for longer explanations or to comment out multiple lines of code. These comments start with /* and end with */.