Comments can be inserted within the SQL. Precede the comment with a backslash (/) followed by an asterisk (*). Type the comment. When finished, follow the comment with an asterisk, followed by a backslash. The comment does not execute when the SQL statement is run, but remains within the statement.

 

 

Example:

UPDATE customers set customername = "After Merger" WHERE customerid = "ALCAO"
/* Per customer request. */