Juttle SQL Adapter Common

Shared library used by Juttle adapters for PostgreSQL, MySQL, and SQLite. Version 0.6.0 is the latest stable release (maintenance mode, last updated ~2016). Provides common SQL query building and optimized read operations (filter, reduce, head/tail). Key differentiator: works with Juttle graph-based analytics language, enables pushdown of Juttle operations into SQL. Low activity, no recent updates.