QL for Visual Studio help


Welcome to the help for QL for Visual Studio! For an overview of the latest updates in version 1.22, see What's new in this version.

Use the links below, the search box at the top of the page, the contents list or the index page, to find help on using QL for Visual Studio.


QL for Visual Studio is an extension that allows you to write and run QL queries locally in your IDE. These topics explain how to run custom queries on project snapshots using the QL for Visual Studio extension.

LGTM for Visual Studio is a separate extension for downloading alerts from LGTM Enterprise, so that you can fix them easily in your IDE. For more information about this extension, see IDE integration for LGTM.

Suggested topics

Here is a selection of help topics you may find useful:

More documentation

For more information about the QL language, writing queries, and other ways to run queries, see Learning QL.

Contact Semmle

For questions about QL for Visual Studio, contact Semmle using your customer-specific Support email address.

For comments or questions about Semmle documentation, email documentation@semmle.com.