A SQL-shaped front end over parser-ng-arrow: SELECT ... FROM ... [WHERE ...] compiles to a vectorized Arrow filter/projection pipeline built on ArrowExpressionEvaluators. This is deliberately NOT a database - no JOIN, INSERT, UPDATE, DELETE, transactions. It exists purely to make SQL a convenient surface syntax for describing vectorized Arrow computations that parser-ng-arrow already knows how to run. For library support, customizations or ...