Question: How do I comment out a column in MySQL?

How do I comment out in MySQL?

In MySQL, a comment started with — symbol is similar to a comment starting with # symbol. When using the — symbol, the comment 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 code in SQL?

To comment out or uncomment SQL code in the SQL and XQuery editor:

  1. Select the SQL code that you want to comment out or uncomment. For a single line, click anywhere in the line of code. For multiple lines, drag the pointer through the lines of code.
  2. Right-click the selected SQL code, and then select Toggle Comment.

How do I add a column description in MySQL?

The syntax to add a column in a table in MySQL (using the ALTER TABLE statement) is: ALTER TABLE table_name ADD new_column_name column_definition [ FIRST | AFTER column_name ]; table_name.

How do I comment in MySQL workbench?

Start up MySQL Workbench and try out your fully working shortcut! Don’t forget you can also manually do this by going to the menu Edit -> Format -> Un/Comment Selection . You can also use the division symbol (forward slash) near the full size keypad if you have one.

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How do I comment in Sqlyog?

Advanced Editing Features

  1. Make Selection Uppercase: To change selected text to uppercase (or press Ctrl+Shift+U)
  2. Make Selection Lowercase: To change selected text to lowercase (or press Ctrl+Shift+L)
  3. Comment Selection: To comment the selected text (or press Ctrl+Shift+C)

What is good about MySQL?

It is open source, reliable, compatible with all major hosting providers, cost-effective, and easy to manage. Many organizations are leveraging the data security and strong transactional support offered by MySQL to secure online transactions and enhance customer interactions.

How do you make a snowflake comment?

To comment/uncomment SQL Scripts in Snowflake Web Interface,

  1. Simply select and highlight multiple lines in the Worksheet.
  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.

What are SQL comments?

SQL Comments are used to explain the sections of the SQL statements, and used to prevent the statements of SQL. In many programming languages, comments matter a lot. A Microsoft Access database does not support the comments. So, Mozilla Firefox and Microsoft Edge use the Microsoft Access database in the examples.

How do I comment all lines 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.

What is varchar in MySQL?

Varchar in MySQL is a data type used for storing text whose length can have a maximum of 65535 characters. The varchar columns in the table are of variable length string that can hold either numeric or character or both.

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How can I add value in one column in MySQL?

If you want to insert a default value into a column, you have two ways:

  1. Ignore both the column name and value in the INSERT statement.
  2. Specify the column name in the INSERT INTO clause and use the DEFAULT keyword in the VALUES clause.
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