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feat(query): Vector index support filter pushdown #18516

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@b41sh b41sh commented Aug 11, 2025

I hereby agree to the terms of the CLA available at: https://docs.databend.com/dev/policies/cla/

Summary

This PR introduces filter pushdown support for vector indexes, significantly improving query performance by implementing a new optimizer rule, RulePushDownSortFilterScan, which pushes filters based solely on distance functions calculated on vector columns down to the storage layer for efficient block-level filtering.

part of : #17972

Tests

  • Unit Test
  • Logic Test
  • Benchmark Test
  • No Test - Explain why

Type of change

  • Bug Fix (non-breaking change which fixes an issue)
  • New Feature (non-breaking change which adds functionality)
  • Breaking Change (fix or feature that could cause existing functionality not to work as expected)
  • Documentation Update
  • Refactoring
  • Performance Improvement
  • Other (please describe):

This change is Reviewable

@github-actions github-actions bot added the pr-feature this PR introduces a new feature to the codebase label Aug 11, 2025
@b41sh b41sh marked this pull request as ready for review August 11, 2025 07:35
@b41sh b41sh requested a review from sundy-li August 11, 2025 07:36
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