Junhao Liu

Using Union's input schema when recompute schema

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## Which issue does this PR close? Closes #. ## Rationale for this change ## What changes are included in this PR? ## Are these changes tested? ## Are there...

[Coral-Incremental] Incremental plan generation for RelNode incremental rewrite

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### What changes are proposed in this pull request, and why are they necessary? Introduction: The goal of this PR is to introduce Incremental Plan Generation for Coral-Incremental. This feature...

[Coral-Incremental] Cost calculation for RelNode

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### What changes are proposed in this pull request, and why are they necessary? The goal of this PR is to introduce cost calculation method for Coral Incremental module, that's...