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Expose minDistance scalar UDFs#135

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estebanzimanyi wants to merge 3 commits into
fix/bump-meos-pinfrom
feat/mindistance-udf-udaf-scaffold
Open

Expose minDistance scalar UDFs#135
estebanzimanyi wants to merge 3 commits into
fix/bump-meos-pinfrom
feat/mindistance-udf-udaf-scaffold

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Registers minDistance(tgeompoint, geometry), minDistance(geometry, tgeompoint), and minDistance(tgeompoint, tgeompoint) following the nearestApproachDistance pattern. The geo-typed forms reuse the NAD kernel since NAD reduces to spatial-min when one argument has no time dimension; the tgeompoint/tgeompoint form calls the threshold-aware mindistance_tgeo_tgeo kernel. The canonical cross-join shape is MIN(minDistance(t1, t2)) with GROUP BY, the cloud-SQL-natural Solution-2 form, identical in result to the MobilityDB 2-ary aggregate of the same signature. Stacked on the MEOS pin bump branch; advances the pin one further commit to d4cc7d289 so the mindistance kernels are present, a commit that only adds mindistance_tgeo_tgeo and tgeoarr_tgeoarr_mindist and changes no existing signature.

Registers minDistance(tgeompoint, geometry), minDistance(geometry,
tgeompoint), and minDistance(tgeompoint, tgeompoint) following the
nearestApproachDistance pattern. The geo-typed forms reuse the NAD
kernel since NAD reduces to spatial-min when one argument has no time
dimension; the tgeompoint/tgeompoint form calls the threshold-aware
mindistance_tgeo_tgeo kernel. The canonical cross-join shape is
MIN(minDistance(t1, t2)) with GROUP BY, the cloud-SQL-natural Solution-2
form; MobilityDB exposes the same signature as a 2-ary aggregate and
yields identical results. Advances the MEOS vcpkg pin one commit over
the base branch to d4cc7d289 so the mindistance kernels are present;
that commit only adds mindistance_tgeo_tgeo and tgeoarr_tgeoarr_mindist
and changes no existing signature.
@estebanzimanyi
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Reviewer's quickstart — ~2-3 minutes

What this PR does: Expose minDistance scalar UDFs.

Risk: focused, single-purpose. Spot-check the source diff + matching tests; CI confirms.

Cross-link: Linux arm64 CI here needs #161 for the orthogonal MeosType build error.

estebanzimanyi and others added 2 commits May 21, 2026 17:36
`meosType` (lower-case) is the **pre-consolidation** MEOS type name;
`MeosType` (upper-case) is the **post-consolidation** target that the
upstream rename sweep has not yet reached.  The current vcpkg pin
(`vcpkg_ports/meos/portfile.cmake` REF f11b7443ee98…) is still
pre-consolidation: `meos/include/temporal/meos_catalog.h` line 121
declares the typedef as `} meosType;` and every MEOS API uses the
lower-case spelling.  MobilityDuck's source code consistently uses
`meosType` to match — `grep -rn '\bMeosType\b' src/` finds the name
only on the alias line and its comment, nowhere else.

c8cad6d added `using meosType = MeosType;` as a forward-looking
bridge for the eventual consolidation bump.  That bridge points at
`MeosType`, which the current pin does NOT yet expose, so it
breaks every PR's Linux arm64 build with:

  /duckdb_build_dir/src/include/tydef.hpp:18:18:
    error: ‘MeosType’ does not name a type; did you mean ‘meosType’?

The fix is to drop the premature alias and replace the misleading
comment with one that documents the pre/post-consolidation distinction
and the resume path for the next pin bump — at that point a reviewer
can either restore the bridge (this time it'll be valid because
`MeosType` will exist) or sweep the MobilityDuck source from
`meosType` to `MeosType` in a single PR.

Unblocks every in-flight PR's Linux arm64 build: #126, #130, #149,
#158, #159, #160, plus the entire `feat/*_port_core` extended-type
stack (#148/#150/#151/#153/#155/#156).
The stage_icu helper mapped only the Linux uname values, so on the
macOS arm64 test runner uname -m returned "arm64" and the icu
extension was copied to .duckdb/extensions/v1.4.4/arm64 instead of
.../osx_arm64, where DuckDB's autoload looks. The hub fallback is not
reliably resolvable on that runner, so the osx_arm64 Test step failed
to load the extension. Map the OS and architecture to the DuckDB
platform string (linux_amd64, linux_arm64, osx_amd64, osx_arm64) so
the locally built icu is staged at the path autoload expects on every
tested platform; the Linux mapping is unchanged.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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