How do I comment out a single line in MySQL?


Single line comments start with — . Any text between — and the end of the line will be ignored (will not be executed).

How do I comment out a line in MySQL?

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 as a space, tab, newline, and so on).

Can you comment out a line in SQL?

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 you comment multiple lines 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 */.vor 4 Tagen

How do I comment out a line in MySQL?

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 as a space, tab, newline, and so on).

How do you comment out a selected line?

If no lines are selected comments will be added (or removed) at the current cursor position. Right-click and select Source > Toggle Comment. ( CTRL+/ )

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).

What is the use of %% in SQL?

The percent sign (%) represents zero, one, or multiple characters. The underscore sign (_) represents one, single character.

How do you comment out in SQL?

Single-Line Comments The single line SQL comment uses two dashes (–) in SQL Server. Once you add the two dashes, SQL Server ignores the text written after these dashes in a single line. It is known as commenting out.

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 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.

What is Ctrl R in SQL?

The key combination of “CTRL+R” is used to show or hide the query results pane. Sometimes we do not require a query results pane and therefore it can be hidden using the keyboard shortcut keys “CTRL+R”. However, there is no direct option to hide this pane.

How do you comment multiple lines in mysql?

Multi-line comments start with /* and end with */ . Any text between /* and */ will be ignored.

How do you select and comment multiple lines?

Press Ctrl + / Select all the lines that you would like to be commented.

How a single and multiple line comment is given in SQL?

PL/SQL supports two comment styles: single-line and multi-line. Single-line comments begin with a double hyphen ( – – ) anywhere on a line and extend to the end of the line. Multi-line comments begin with a slash-asterisk ( /* ), end with an asterisk-slash ( */ ), and can span multiple lines.

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.

How do I comment out a line in MySQL?

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 as a space, tab, newline, and so on).

How do I insert a comment for selected text?

Insert a comment Select the text or item that you want to comment on, or click to insert the cursor near the text that you want to comment on. On the Review tab, under Comments, click New. Type the comment text in the comment balloon.

Is a single line comment?

Single-line comments allow narrative on only one line at a time. Single-line comments can begin in any column of a given line and end at a new line or carriage return. The code above uses single-line comments within the Credit method and the set accessor for the AccountNo property.

What is $$ in SQL?

The dollar signs are used for literal string quoting. Function bodies are handed to the database as plain text strings.

What are the 3 types of SQL commands?

There are 3 main types of commands. DDL (Data Definition Language) commands, DML (Data Manipulation Language) commands, and DCL (Data Control Language) commands.

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