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Add LTTB downsampling as a built-in Table Model table function - #18725

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DaZuiZui wants to merge 10 commits into

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DaZuiZui:feat/lttb-table-function

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Add LTTB downsampling as a built-in Table Model table function#18725
DaZuiZui wants to merge 10 commits into
apache:masterfrom
DaZuiZui:feat/lttb-table-function

Commits on Sep 24, 2026
- feat(table): add LTTB table function
  DaZuiZui
  committed
  1284723
Commits on Oct 8, 2026
Commits on Oct 9, 2026
- fix(table): handle LTTB sampling and count-window overflow
  DaZuiZui
  committed
  edbb76a
Commits on Oct 12, 2026
- fix(lttb): reject duplicate timestamps with 701 and keep non-finite values
  
  DaZuiZui
  and
  claude
  committed
  98730f3
- Merge remote-tracking branch 'origin/feat/lttb-table-function' into feat/lttb-table-function
  
  DaZuiZui
  and
  claude
  committed
  1e3e8a9
- test(lttb): source duplicate timestamps from a real table in the 701 IT
  
  DaZuiZui
  and
  claude
  committed
  cb52833
Commits on Oct 13, 2026
- fix(lttb): address review findings on the LTTB table function
  DaZuiZui
  committed
  5cdb336
- docs(lttb): state the settled SIZE-mode semantics and cover the boundary rules
  DaZuiZui
  committed
  213393e