MySQL Comments Comments are used to explain SQL code, or to temporarily prevent execution of SQL code (for debugging). Comments are ignored by the database engine. MySQL supports single …

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 …

In MySQL, the -- (double-dash) comment style requires the second dash to be followed by at least one whitespace or control character (such as a space, tab, newline, and so on). This syntax differs …

On Unix, the mysql client logs statements executed interactively to a history file. See Section 6.5.1.3, “mysql Client Logging”.

1.6.2.4 '--' as the Start of a Comment Standard SQL uses the C syntax /* this is a comment */ for comments, and MySQL Server supports this syntax as well. MySQL also support extensions to this …

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 …

2022年3月30日 · What is a comment in MySQL? What are the different types of comments in MySQL? What are the available styles of comments in MySQL? Syntax of each comment style. Example of …

2024年1月5日 · mysql 8 加注释就出错comment，#MySQL8加注释就出错 (comment)##引言在使用MySQL数据库时，我们经常会遇到需要给表、列、函数等对象添加注释的情况。 注释可以提供更多 …

MySQL also support extensions to this syntax that enable MySQL-specific SQL to be embedded in the comment; see Section 11.7, “Comments”. MySQL Server also uses # as the start comment character.

2024年7月22日 · This definitive guide will walk you through everything you need to know when working with commenting in MySQL and related database management systems.