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DB engine gives wrong result when handling condition #775

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Aurora-yzj opened this issue Aug 26, 2024 · 0 comments
Open

DB engine gives wrong result when handling condition #775

Aurora-yzj opened this issue Aug 26, 2024 · 0 comments

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@Aurora-yzj
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Hi! I discovered a correctness bug in FalkorDB that gives wrong results when handling conditions. Steps to reproduce are as follows:

  1. Build up the database using the following queries:
CREATE (n0 :L0{k0 : true, k1 : 203585722, k2 : -1368076618, k3 : true, k4 : "9YARbhe", id : 0})
CREATE (n0 :L0:L1{k0 : true, k1 : -878497906, k2 : -321782477, k3 : false, k4 : "vOOn2", k11 : false, id : 1, k6 : 1021585152, k10 : "q7pdXs", k7 : 1254040260, k8 : "l1uEbLnt"})
CREATE (n0 :L1{k5 : 178653231, k11 : true, k6 : -1313572034, k10 : "bGyuYMItQ", id : 3, k7 : -809314095, k8 : "cKbIokpX", k9 : "CMTr1m"})
CREATE (n0 :L1:L0{k0 : true, k1 : -117710145, k2 : -2015042849, k3 : false, k4 : "iThh4L0", k5 : -1098353604, k11 : false, k6 : 1786444615, k10 : "Q3qNUv", k7 : -1953811694, k8 : "zz6fI", k9 : "PH7HD", id : 4})
CREATE (n0 :L1:L0{k0 : false, k1 : -674081905, k2 : -773286603, k3 : false, k4 : "rzbYu", k5 : -236195781, k11 : false, k6 : -1932694668, k10 : "PVKf63", id : 6, k7 : 1695427549, k8 : "NZWaCnU3"})
MATCH (n0 {id : 4}), (n1 {id : 3}) MERGE(n0)-[r :T4{k39 : 1943113910, k38 : false, k40 : false, k42 : "XmBfr7gU", k41 : -778337808, id : 10}]->(n1)
MATCH (n0 {id : 4}), (n1 {id : 1}) MERGE(n0)-[r :T4{k39 : 119191616, k38 : false, k40 : true, k42 : "YJ3RRV", k41 : -879376269, k43 : "Oqu0Swg", id : 11}]->(n1)
MATCH (n0 {id : 0}), (n1 {id : 4}) MERGE(n0)-[r :T2{k28 : true, k27 : true, k29 : true, k31 : "ScnIFpiq", k30 : false, k32 : -1705014269, id : 14}]->(n1)
MATCH (n0 {id : 6}), (n1 {id : 3}) MERGE(n0)-[r :T7{k55 : -1462689760, id : 16, k57 : -382022903, k56 : "xvPfOAPc", k59 : "6t0RC", k58 : -1618111212}]->(n1)
  1. The following query gives two results, True and False respectively:
MATCH (n0)<-[r2]-(n1)<-[r3]-(n2) WHERE true WITH r3, (r3.id) AS a21, n0 MATCH (n0)<-[r4 :T4]-(n1)<-[r5]-(n2 :L0), (n3)<-[r6 :T7]-(n4) WHERE (((n0.k7) > 1254040258) AND ((r6.id) > r3.id)) RETURN (((n0.k7) > 1254040258) AND ((r6.id) > a21))

image
However, it should only output True, as the return expression is part of the condition, and a21 is just an alias of r3.id:

... WHERE (((n0.k7) > 1254040258) AND ((r6.id) > r3.id)) RETURN (((n0.k7) > 1254040258) AND ((r6.id) > a21))

Thank you!
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@Aurora-yzj