Changelog

Unreleased

Fixed

• Self-joins and overlapping column names: JOINs between tables sharing column names (including self-joins) now produce correct results. The SQL layer rewrites qualified column references to unique internal keys, preventing right-side columns from silently overwriting left-side columns.
• Window frame dispatch: ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING now correctly routes to the sliding window path instead of falling through to the default running sum.
• CORR scalar aggregate: SELECT CORR(x, y) FROM t without GROUP BY no longer crashes.
• COALESCE with NULL literals: COALESCE(NULL, 1) and N-ary COALESCE(NULL, NULL, 42) now work correctly. Multi-argument COALESCE is nested into binary pairs.
• NOT IN with NULL: WHERE x NOT IN (1, NULL) now correctly returns no rows per SQL three-valued logic.

v0.1.0

Initial public release.