You can comment out or uncomment a single line of code in an SQL statement, multiple adjacent lines of code, a complete SQL statement, or multiple adjacent SQL statements. The syntax for a comment in a line of SQL code is a double hyphen ( — ) at the beginning of the line.
How do I comment out a single line in SQL?
Syntax Using — symbol In SQL Server, a comment started with — symbol must be at the end of a line in your SQL statement with a line break after it. This method of commenting can only span a single line within your SQL and must be at the end of the line.
How do I comment out in MySQL?
In MySQL, a comment that starts with /* symbol and ends with */ and can be anywhere in your SQL statement. This method of commenting can span several lines within your SQL.
How do I comment out a single line in SQL?
Syntax Using — symbol In SQL Server, a comment started with — symbol must be at the end of a line in your SQL statement with a line break after it. This method of commenting can only span a single line within your SQL and must be at the end of the line.
How do you comment out a selected line?
To comment out multiple code lines right-click and select Source > Add Block Comment. ( CTRL+SHIFT+/ )
How do I make single line comments?
Single-line comments start with two forward slashes ( // ). Any text between // and the end of the line is ignored by the compiler (will not be executed).
How do you comment out an element?
To “comment out” a button — or any HTML element— simply wrap the element in the< ! ╌ ╌> tags. Everything between those tags will not be shown on the front end.
How do I comment out multiple lines of code in SQL?
Comments can be inserted on a separate line or within a Transact-SQL statement. Multiple-line comments must be indicated by /* and */. A stylistic convention often used for multiple-line comments is to begin the first line with /*, subsequent lines with **, and end with */.
What is /* in MySQL?
This is a type of comment. The /* is the beginning of a comment and */ is the end of comment. MySQL will ignore the above comment.
Which command is used for comment a line?
Use /* and */ to set off a comment within a command. The comment can be placed wherever a blank is valid (except within strings) and should be preceded by a blank. Comments within a command cannot be continued onto the next line. The closing */ is optional when the comment is at the end of the line.
Can use dash to comment a single line?
Correct Option: E. /* */ can also be use to comment just a single line although it is used for paragraphs. // and # are used only for single line comment.
How do I comment out a single line in SQL?
Syntax Using — symbol In SQL Server, a comment started with — symbol must be at the end of a line in your SQL statement with a line break after it. This method of commenting can only span a single line within your SQL and must be at the end of the line.
Which command is used for comment a line?
Use /* and */ to set off a comment within a command. The comment can be placed wherever a blank is valid (except within strings) and should be preceded by a blank. Comments within a command cannot be continued onto the next line. The closing */ is optional when the comment is at the end of the line.
What symbol do we use to comment out parts of the code SQL?
The syntax for a comment in a line of SQL code is a double hyphen ( — ) at the beginning of the line. The comment affects all of the SQL code in the line.
What does it mean to comment out a line?
(programming, transitive) To disable a section of source code by converting it into a comment. If you do not want to run this line of code, just comment it out!
How do you comment over multiple lines?
/* */ (multiline comment) Multiline comments are used for large text descriptions of code or to comment out chunks of code while debugging applications. Comments are ignored by the compiler.
What is the shortcut to comment multiple lines?
Select the Code to Comment. Press Ctrl + K . Press Ctrl + C .
How do you write a comment?
To create a TODO comment Place the caret where you want to create a TODO item and add a comment, for example, by pressing Ctrl+/ , then type TODO or FIXME , and then type your note. View the list of TODO items in the TODO tool window.
What is the use of %% in SQL?
The percent sign (%) represents zero, one, or multiple characters. The underscore sign (_) represents one, single character.
What does =* mean in SQL?
What is %s and %D in MySQL?
12 years, 11 months ago. it’s for php to know how to handle the parameters, %d – the argument is treated as an integer, and presented as a (signed) decimal number. %s – the argument is treated as and presented as a string. in your examples, $slug is a string and $this->id is an integer.
What is comment command in SQL?
Comments are used to explain sections of SQL statements, or to prevent execution of SQL statements. Note: The examples in this chapter will not work in Firefox and Microsoft Edge! Comments are not supported in Microsoft Access databases. Firefox and Microsoft Edge are using Microsoft Access database in our examples.
