pub fn parse_check_expr_fragment(s: &str) -> Option<CheckExpr>Expand description
Parse a QAIL check expression string into a CheckExpr. Supports: “col >= 0” → GreaterOrEqual “col > 0” → GreaterThan “col <= 100” → LessOrEqual “col < 100” → LessThan “col between 0 200” → Between “col >= 0 and col <= 200” → And(GreaterOrEqual, LessOrEqual)