MapType

class pyspark.sql.types.MapType(keyType, valueType, valueContainsNull=True)[source]

Map data type.

Parameters
  • keyTypeDataType of the keys in the map.

  • valueTypeDataType of the values in the map.

  • valueContainsNull – indicates whether values can contain null (None) values.

Keys in a map data type are not allowed to be null (None).

Methods

Methods Documentation

fromInternal(obj)[source]

Converts an internal SQL object into a native Python object.

classmethod fromJson(json)[source]
json()
jsonValue()[source]
needConversion()[source]

Does this type needs conversion between Python object and internal SQL object.

This is used to avoid the unnecessary conversion for ArrayType/MapType/StructType.

simpleString()[source]
toInternal(obj)[source]

Converts a Python object into an internal SQL object.

classmethod typeName()