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Improve match start from Scan in multiple pattern #3972

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Shylock-Hg opened this issue Mar 3, 2022 · 2 comments
Open

Improve match start from Scan in multiple pattern #3972

Shylock-Hg opened this issue Mar 3, 2022 · 2 comments
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type/enhancement Type: make the code neat or more efficient

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@Shylock-Hg
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Shylock-Hg commented Mar 3, 2022

Introduction

In query MATCH (v0:player),(v1:team) RETURN v0,v1 LIMIT 100, we could push Limit over BiCartesianProduct to let it start from ScanVertices.
For query like MATCH (v0:player)-[:like]->(v2), (v2)-[:serve]->(v1:team) RETURN v0,v1 LIMIT 100, we can't push Limit over BiInnerJoin, so can't do this.

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@Shylock-Hg Shylock-Hg added the type/enhancement Type: make the code neat or more efficient label Mar 3, 2022
@Shylock-Hg Shylock-Hg self-assigned this Mar 3, 2022
@czpmango
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Related to #5170.

@czpmango
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It is important to avoid the implementation of a feature that depends on optimizer, which is just a module responsible for performance optimization.

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