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 out a block of text in SQL?
Remarks. 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 */.
Can you comment 2 or more rows in SQL query if yes how can you do it?
Block or Multi-line SQL Comment If we need to comment out multiple lines, you need to put a double dash on each line. It is not a feasible solution if we want to comment out multiple lines of code. Therefore, SQL Server uses multi-line comments that start with /* and ends with */.
How do you quickly comment out in SQL?
The keyboard shortcut to comment text is CTRL + K, CTRL + C. The keyboard shortcut to uncomment text is CTRL + K, CTRL + U.
How do I comment out in MySQL SQL?
Syntax Using /* and */ symbols 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.
What is like %% in SQL?
The LIKE operator is used in a WHERE clause to search for a specified pattern in a column. There are two wildcards often used in conjunction with the LIKE operator: The percent sign (%) represents zero, one, or multiple characters. The underscore sign (_) represents one, single character.
How do I comment multiple rows?
To comment out multiple code lines right-click and select Source > Add Block Comment. ( CTRL+SHIFT+/ ) To uncomment multiple code lines right-click and select Source > Remove Block Comment.
How do you comment multiple lines in a large query?
Ctrl + / : Comment current or selected line(s).
How do you comment multiple lines in SQL?
Multi-line comments start with /* and end with */ . Any text between /* and */ will be ignored.
How do you comment on a block?
To comment a block: Select the required block of code. The beginning (/*) and ending (*/) characters will be added in the appropriate places in order to mark the selected block as a comment.
What is Ctrl F5 in SQL?
F5 or ALT + X or CTRL + E: Execute all the queries written on query window. CTRL + F5: Parse the query to check if there are any syntax errors.
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 the difference between like and in SQL?
Example. Other than the difference of having wildcard characters, %, and _, there is a significant difference between LIKE and = operators is that LIKE operator does not ignore the trailing spaces while = operator ignores the trailing spaces.
What is escape in SQL?
Escape sequences are used within an SQL statement to tell the driver that the escaped part of the SQL string should be handled differently. When the JDBC driver processes the escaped part of an SQL string, it translates that part of the string into SQL code that SQL Server understands.
How do you write a multi-line comment in SQL?
Multi-line comments start with /* and end with */ . Any text between /* and */ will be ignored.
How do I comment multiple lines in SQL?
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 (*/).
How do you comment on all lines?
Press Ctrl + / Select all the lines that you would like to be commented.
How do you comment multiple lines in a script?
Method 1: Using <
How do you make a multi line comment with a multiline string?
To comment out multiple lines in Python, you can prepend each line with a hash ( # ). With this approach, you’re technically making multiple single-line comments. The real workaround for making multi-line comments in Python is by using docstrings.
How do you select and comment multiple lines?
Comment and uncomment lines of code Press Ctrl+/ .
What does like %% mean in SQL?
The LIKE operator is used in a WHERE clause to search for a specified pattern in a column. There are two wildcards often used in conjunction with the LIKE operator: The percent sign (%) represents zero, one, or multiple characters. The underscore sign (_) represents one, single character.
