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Quick Answer: How do you comment in PL SQL?

PL/SQL supports two comment styles: single-line and multi-line. A double hyphen ( – – ) anywhere on a line (except within a character literal) turns the rest of the line into a comment. Multi-line comments begin with a slash-asterisk ( /* ) and end with an asterisk-slash ( */ ). For more information, see “Comments”.

How do you comment in PL SQL Developer?

Comments

  1. Begin the comment with a slash and an asterisk (/*). Proceed with the text of the comment. This text can span multiple lines. End the comment with an asterisk and a slash (*/).
  2. Begin the comment with — (two hyphens). Proceed with the text of the comment. This text cannot extend to a new line.

How do you comment a table in SQL?

Use the COMMENT statement to add a comment about a table, view, materialized view, or column into the data dictionary. To drop a comment from the database, set it to the empty string ‘ ‘. See Also: “Comments” for more information on associating comments with SQL statements and schema objects.

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What are types of comments in PL 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 the shortcut for comment in Oracle SQL?

Hi, In SQL Developer you can comment a line or a block using “Source -> Toggle Line Comments” (Ctrl-Slash), but it would be nice to have a button that allows you to do it not only for line or block, but also for a part of a line.

How do I comment in a stored procedure?

To create line comments you just use two dashes “–” in front of the code you want to comment. You can comment out one or multiple lines with this technique. In this example the entire line is commented out.

How do I comment in SQL Server Management Studio?

The keyboard shortcut to comment text is CTRL + K, CTRL + C. The keyboard shortcut to uncomment text is CTRL + K, CTRL + U.

What is comment on column?

Adds, revises, or removes a projection column comment. You can only add comments to projection columns, not to table columns. Each object can have one comment. Comments are stored in the system table COMMENTS.

What are SQL comments?

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.

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What is the correct syntax of writing comments inside HTML file?

An HTML comment begins with <! –– and the comment closes with ––>. HTML comments are visible to anyone that views the page source code, but are not rendered when the HTML document is rendered by a browser.

How do you comment in PL?

PL/SQL supports two comment styles: single-line and multi-line. A double hyphen ( – – ) anywhere on a line (except within a character literal) turns the rest of the line into a comment. Multi-line comments begin with a slash-asterisk ( /* ) and end with an asterisk-slash ( */ ).

How do you enter a comment in a program?

A comment starts with a slash asterisk /* and ends with a asterisk slash */ and can be anywhere in your program. Comments can span several lines within your C program. Comments are typically added directly above the related C source code.

How do you insert comments in Java code?

Adding Comments to Java Code

  1. Traditional comments: The first five lines of the listing form one traditional comment. The comment begins with /* and ends with */.
  2. End-of-line comments: The text //I?
  3. Javadoc comments: A javadoc comment begins with a slash and two asterisks (/**).

How do I comment out in Oracle?

Comments

  1. Begin the comment with a slash and an asterisk (/*). Proceed with the text of the comment. This text can span multiple lines. End the comment with an asterisk and a slash (*/).
  2. Begin the comment with — (two hyphens). Proceed with the text of the comment. This text cannot extend to a new line.

How do I comment multiple rows in SQL?

To comment or uncomment multiple lines in the web interface > SQL Worksheet:

  1. Highlight multiple lines in the Worksheet. Begin;
  2. Press CMD + / (Mac) or CTRL + / (Windows). The highlighted lines are commented out.
  3. Press CMD + / (Mac) or CTRL + / (Windows) again. The comments are removed from the highlighted lines.
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How do you comment multiple lines in Bigquery?

Ctrl + Alt + / and Shift + Ctrl + Alt + / – comment/ uncomment outside selection Contextual Menu.

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