Langium/SQL

Langium/SQL is an extensible language server for SQL dialects built on the Langium framework. It provides schema-driven SQL editing with code completion, syntax highlighting, symbol search, and real-time validation. The current stable version is 0.3.2, released on an irregular cadence. Key differentiators include a super-set approach that allows adding missing dialect features to the grammar while protecting others via validations, and high customizability where any behavior can be overridden. It is designed for integration into editors and IDEs via the Language Server Protocol.