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Add a footer-only approximate distinct count aggregate - #11214

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joseph-isaacs wants to merge 3 commits into

ji/great-keller-lsp6wa

Draft

Add a footer-only approximate distinct count aggregate#11214
joseph-isaacs wants to merge 3 commits into
developfrom
ji/great-keller-lsp6wa

Commits on Nov 4, 2026
- Add a footer-only approximate distinct count aggregate
  
  joseph-isaacs
  and
  claude
  committed
  e8e683a
- Keep the distinct set exact on write and add an HLL variant
  
  joseph-isaacs
  and
  claude
  committed
  ca37605
Commits on Nov 7, 2026
- Add a statistics-driven join reorder rule for DataFusion
  
  joseph-isaacs
  and
  claude
  committed
  d3e26e0