mirror of
https://github.com/github/codeql.git
synced 2026-04-29 10:45:15 +02:00
19435e07a1
After the recent inlining of `unresolveElement`, the join order in `CommentedOutCode` became a problem. The join orderer was tempted to join the two `hasLocationInfo` calls first because they had one column in common. With this commit, they have no columns in common. It follows from the other predicates in the same file that this column would be the same, so there is no need to assert it in this predicate and risk that the join orderer uses that information. On Wireshark, the `CommentBlock::hasLocationInfo` predicate goes from taking 2m2s to taking 180ms. The query produces the same 7,448 alerts.
Semmle QL
This open source repository contains the standard QL libraries and queries that power LGTM, and the other products that Semmle makes available to its customers worldwide.
How do I learn QL and run queries?
LGTM has extensive documentation on getting started with writing QL. You can use the interactive query console or the QL for Eclipse plugin to try out your queries on any open-source project that's currently being analyzed.
Contributing
We welcome contributions to our standard library and standard checks. Do you have an idea for a new check, or how to improve an existing query? Then please go ahead and open a pull request! Before you do, though, please take the time to read our contributing guidelines and QL style guide.
License
The LGTM queries are licensed under Apache License 2.0 by Semmle.