1. Introducing SQL : Regular and Delimited Identifiers : Comment Delimiters
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Comment Delimiters
To indicate comments in interactive SQL, use the following delimiters:
/* and */
For example:
/* This is a comment */
The /*...*/ delimiters allow a comment to continue over more than one line. For example:
/* Everything from here...
...to here is a comment */
The -- delimiter indicates that the rest of the line is a comment. The comment cannot be continued to another line.
For example:
--This is a comment.