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Comments (2)

stechu avatar stechu commented on July 21, 2024

Thanks for the report. This looks like an edge case in prover code gen.

from cosette.

matthiastz avatar matthiastz commented on July 21, 2024

While working with Cosette I found more cases where the solver runs into out of time. Maybe that is of interest for you:

redundant sql clauses

schema TrackSchema(TrackId: int, Name: varchar, AlbumId: int,
                MediaTypeId: int, GenreId: int, Composer: varchar,
                Milliseconds: int, Bytes: int, UnitPrice: numeric);
table Track(TrackSchema);

query q1
`SELECT tr.Name, tr.MediaTypeId FROM Track tr WHERE tr.MediaTypeId > 2`;

query q2
`SELECT tr.Name, tr.MediaTypeId FROM Track tr WHERE tr.MediaTypeId > 2 and tr.MediaTypeId > 1`;

verify q1 q2;

joins

schema TrackSchema(TrackId: int, Name: varchar, AlbumId: int,
                MediaTypeId: int, GenreId: int, Composer: varchar,
                Milliseconds: int, Bytes: int, UnitPrice: numeric);
table Track(TrackSchema);
schema MediaTypeSchema(MediaTypeId: int, Name: varchar); 
table MediaType(MediaTypeSchema);

query q1
`select tr.TrackId, tr.Name, tr.Composer from Track tr
join (select mt.MediaTypeId,  mt.Name from MediaType mt where mt.Name = 'AAC audio file')
as tMediaType ON tr.MediaTypeId = tMediaType.MediaTypeId`;

query q2
`select tr.TrackId, tr.Name, tr.Composer  from Track tr
join MediaType mt
ON tr.MediaTypeId = mt.MediaTypeId
WHERE mt.Name = 'AAC audio file'`;

verify q1 q2;

from cosette.

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