SNOW-3243341: python wrapper - support pandas and pyarrow fetching

python/hatch_build.py

@@ -56,10 +56,12 @@ class BuildHook(BuildHookInterface):
     # C++ source files in ArrowIterator directory
     CPP_SOURCES = [
         "ArrayConverter.cpp",
+        "ArrowTableConverter.cpp",
         "BinaryConverter.cpp",
         "BooleanConverter.cpp",
         "CArrowIterator.cpp",
         "CArrowStreamIterator.cpp",
+        "CArrowStreamTableIterator.cpp",
         "ConverterUtil.cpp",
         "DateConverter.cpp",
         "DecFloatConverter.cpp",

python/src/snowflake/connector/_internal/arrow_stream_iterator.pyi

@@ -24,3 +24,17 @@ class ArrowStreamIterator(Iterator[Any]):
     ) -> None: ...
     def __iter__(self) -> ArrowStreamIterator: ...
     def __next__(self) -> Any: ...
+
+class ArrowStreamTableIterator(Iterator[Any]):
+    """Iterator that yields one pyarrow RecordBatch per batch with Snowflake type conversions applied."""
+
+    def __init__(
+        self,
+        stream_ptr: int,
+        arrow_context: Any,
+        number_to_decimal: bool = False,
+        force_microsecond_precision: bool = False,
+    ) -> None: ...
+    def __iter__(self) -> ArrowStreamTableIterator: ...
+    def __next__(self) -> Any: ...
+    def get_converted_schema(self) -> Any: ...