[ CCode ( has_construct_function = false ) ]
[ Version ( since = "12.0.0" ) ]
public SparseUnionArrayBuilder (SparseUnionDataType? data_type) throws Error
| data_type |
SparseUnionDataType for the sparse union. If this is null, you start an empty children sparse union. You can add children by multiple `garrow_union_array_builder_append_child()` calls. |
|
A newly created SparseUnionArrayBuilder on success, null on error. |