Double Slash Comment (U-SQL)
Indicates user-provided text. Comments can be inserted on a separate line, nested at the end of a U-SQL command line, or within a U-SQL statement. The query processor does not evaluate the comment.
Double_Slash_Comment := '//' text_of_comment.
Use two slashes (
//) for single-line or nested comments. Comments inserted with
// are terminated by the newline character. There is no maximum length for comments.
- The example can be executed in Visual Studio with the Azure Data Lake Tools plug-in.
- The script can be executed locally. An Azure subscription and Azure Data Lake Analytics account is not needed when executed locally.
The following example uses the
// commenting characters.
// simple rowset variable @someBooks = SELECT * FROM ( VALUES ("The Book Thief", "Markus Zusak", "2005"), ("The Girl with the Dragon Tattoo", "Stieg Larsson", "2005"), ("The Silver Linings Playbook", "Matthew Quick", "2008"), ("Sarah's Key", "Tatiana de Rosnay", "2006") ) AS T(Books, Author, [Publication Year]); // return books from 2006 @result = SELECT * FROM @someBooks // this is a nested comment WHERE [Publication Year] == "2006"; OUTPUT @result TO "/Output/ReferenceGuide/LanguageElements/Comments/exampleA.txt" USING Outputters.Csv();