Open matthiastz opened 4 years ago
setup:
schema TrackSchema(TrackId: int, Name: varchar, AlbumId: int, MediaTypeId: int, GenreId: int, Composer: varchar, Milliseconds: int, Bytes: int, UnitPrice: numeric); table Track(TrackSchema); schema PlaylistTrackSchema(PlaylistId: int, TrackId: int); table PlaylistTrack(PlaylistTrackSchema); schema GenreSchema(GenreId: int, Name: varchar); table Genre(GenreSchema); query q1 `SELECT PT.PlaylistId, TR.TrackId, TR.Name, G.Name FROM PlaylistTrack AS PT INNER JOIN Track AS TR ON TR.TrackId = PT.TrackId INNER JOIN Genre AS G ON G.GenreId = TR.GenreId`; query q2 `SELECT PT.PlaylistId, TR.TrackId, TR.Name, G.Name FROM PlaylistTrack AS PT JOIN Track AS TR ON PT.TrackId = TR.TrackId INNER JOIN Genre AS G ON TR.GenreId = G.GenreId`; verify q1 q2;
result: Two queries' equivalence is unknown. Solver runs out of time.
setup:
result: Two queries' equivalence is unknown. Solver runs out of time.