What is it? ClangQL is a proof-of-concept SQLite extension for querying C++ codebases that have been indexed using clangd. How does it work? It employs SQLite's virtual table system to act as an intermediary between SQLite and clangd's gRPC interface How do I use it? Once the module has been built, you can load it in the sqlite3 CLI via the usual .load clangql. Afterwards, you can connect to a codebase by instantiating the various virtual tables: sqlite> CREATE VIRTUAL TABLE llvm_symbols USING clangql (symbols, clangd-index.llvm.org:5900); sqlite> CREATE VIRTUAL TABLE llvm_base_of USING clangql (base_of, clangd-index.llvm.org:5900);