pyspark.sql.types.MapType

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

Map data type.

Parameters

  • keyType – DataType of the keys in the map.

  • valueType – DataType 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).

__init__(keyType, valueType, valueContainsNull=True)[source]
>>> (MapType(StringType(), IntegerType())
...        == MapType(StringType(), IntegerType(), True))
True
>>> (MapType(StringType(), IntegerType(), False)
...        == MapType(StringType(), FloatType()))
False

Methods

__init__(keyType, valueType[, valueContainsNull])

 

>>> (MapType(StringType(), IntegerType())

fromInternal(obj)

Converts an internal SQL object into a native Python object.

fromJson(json)

json()

jsonValue()

needConversion()

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

simpleString()

toInternal(obj)

Converts a Python object into an internal SQL object.

typeName()

pyspark.sql.types.LongType pyspark.sql.types.NullType