ExperimentalReadonly ExperimentalbatchOptional Readonly ExperimentalcrsCRS metadata for the geometry column, preferably PROJJSON.
Readonly ExperimentaldimensionsOptional Readonly ExperimentalfeatureOptional uint32 feature-id column materialized beside the geometry.
Optional Readonly ExperimentalgeometryGeometry field name recorded in the batch schema (defaults to geometry).
Readonly ExperimentalidentityIdentity derived from the accepted query plan
(columnarBatchIdentityFromPlan). schemaVersion becomes the batch's
schema id, which is how the columnar envelope binds identity to layout.
Readonly ExperimentalkindMust be a 1:1 GeoArrow kind; the multi-part encodings are refused.
Optional Readonly ExperimentalrowReadonly ExperimentalsequenceReadonly ExperimentalvaluesDuckDB-materialized geometry column values, one entry per result row.
A columnar production request: the raw geometry column plus the plan-derived identity the batch will carry.