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Fix wrong output when using pattern expression as the filter in MATCH #4788

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merged 3 commits into from
Oct 27, 2022
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Fix wrong output when using pattern expression as the filter in MATCH #4788

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23628a6
Fix pattern expr
Aiee Oct 26, 2022
fe8d003
Avoid copy
Aiee Oct 26, 2022
4a772af
Address comments
Aiee Oct 26, 2022
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2 changes: 1 addition & 1 deletion src/common/expression/UnaryExpression.h
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Original file line number Diff line number Diff line change
Expand Up @@ -87,7 +87,7 @@ class UnaryExpression final : public Expression {
void resetFrom(Decoder& decoder) override;

private:
Expression* operand_;
Expression* operand_{nullptr};
Value result_;
};

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7 changes: 5 additions & 2 deletions src/graph/executor/query/RollUpApplyExecutor.cpp
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Expand Up @@ -121,7 +121,10 @@ DataSet RollUpApplyExecutor::probe(std::vector<Expression*> probeKeys,
List list;
list.values.reserve(probeKeys.size());
for (auto& col : probeKeys) {
Value val = col->eval(ctx(probeIter));
// Clone the expression so when evaluating the InputPropertyExpression, the propIndex_ will
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// not be cached
auto* colCopy = col->clone();
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The header of input table is fixed, why propIndex_ will be incorrect?

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For example, the column t is the 3rd column in the left iterator and is the 2nd column in the right iterator.

I20221026 16:00:58.585834 2228773 RollUpApplyExecutor.cpp:39] left iter size: 7
I20221026 16:00:58.585844 2228773 RollUpApplyExecutor.cpp:40] left iter value: v|e|t|p|

I20221026 16:00:58.586164 2228773 RollUpApplyExecutor.cpp:42] right iter size: 6
I20221026 16:00:58.586175 2228773 RollUpApplyExecutor.cpp:43] right iter value: v|t|(v)-->(t:player)|

Value val = colCopy->eval(ctx(probeIter));
list.values.emplace_back(std::move(val));
}

Expand Down Expand Up @@ -150,7 +153,7 @@ folly::Future<Status> RollUpApplyExecutor::rollUpApply() {
} else if (rollUpApplyNode->compareCols().size() == 1) {
std::unordered_map<Value, List> hashTable;
// Clone the expression so when evaluating the InputPropertyExpression, the propIndex_ will not
// be buffered.
// be cached.
buildSingleKeyHashTable(rollUpApplyNode->compareCols()[0]->clone(),
rollUpApplyNode->collectCol(),
rhsIter_.get(),
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7 changes: 7 additions & 0 deletions tests/tck/features/match/PathExpr.feature
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Expand Up @@ -150,6 +150,13 @@ Feature: Basic match
| ("Aron Baynes" :player{age: 32, name: "Aron Baynes"}) |
| ("Tiago Splitter" :player{age: 34, name: "Tiago Splitter"}) |
| ("Boris Diaw" :player{age: 36, name: "Boris Diaw"}) |
When executing query:
"""
MATCH p = (v:player{name:"Tim Duncan"})-[e]->(t) WHERE NOT (v)-[]->(t:player) RETURN t
"""
Then the result should be, in any order:
| t |
| ("Spurs" :team{name: "Spurs"}) |

Scenario: In With
When executing query:
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