MapType¶
-
class
pyspark.sql.types.
MapType
(keyType, valueType, valueContainsNull=True)[source]¶ Map data type.
- Parameters
Notes
Keys in a map data type are not allowed to be null (None).
Examples
>>> (MapType(StringType(), IntegerType()) ... == MapType(StringType(), IntegerType(), True)) True >>> (MapType(StringType(), IntegerType(), False) ... == MapType(StringType(), FloatType())) False
Methods
fromInternal
(obj)Converts an internal SQL object into a native Python object.
fromJson
(json)json
()Does this type needs conversion between Python object and internal SQL object.
toInternal
(obj)Converts a Python object into an internal SQL object.
typeName
()Methods Documentation
-
json
()¶
-
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.
-
classmethod
typeName
()¶