jiayuasu opened a new issue, #3202:
URL: https://github.com/apache/sedona/issues/3202
### Problem
The two-argument Geography overload for `ST_MakeLine` can fail when either
supported input is empty:
```sql
SELECT ST_AsText(
ST_MakeLine(
ST_GeogFromWKT('POINT EMPTY', 4326),
ST_GeogFromWKT('POINT (1 0)', 4326)
)
);
```
After empty coordinates are skipped, the result can contain zero or one
coordinate. JTS accepts an empty LineString but rejects a one-coordinate
LineString with:
```text
Invalid number of points in LineString (found 1 - must be 0 or >= 2)
```
### Expected behavior
- Ignore empty Point and LineString components.
- Return `LINESTRING EMPTY` when no coordinates remain.
- When exactly one coordinate remains, duplicate it to produce a valid
zero-length JTS/OGC LineString while preserving the same point set.
- Preserve the first input's SRID.
- Cover Point and LineString empties in common, Spark, and Flink tests.
PostGIS and SedonaDB skip empty components but can represent or emit a
one-coordinate LineString. Duplicating the remaining coordinate is the
valid-JTS adaptation.
This follow-up depends on the Geography `ST_MakeLine` overload introduced by
#3195.
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