pyspark.sql.functions.posexplode

pyspark.sql.functions.posexplode(col: ColumnOrName) → pyspark.sql.column.Column

Returns a new row for each element with position in the given array or map. Uses the default column name pos for position, and col for elements in the array and key and value for elements in the map unless specified otherwise.

New in version 2.1.0.

Examples

>>> from pyspark.sql import Row
>>> eDF = spark.createDataFrame([Row(a=1, intlist=[1,2,3], mapfield={"a": "b"})])
>>> eDF.select(posexplode(eDF.intlist)).collect()
[Row(pos=0, col=1), Row(pos=1, col=2), Row(pos=2, col=3)]

>>> eDF.select(posexplode(eDF.mapfield)).show()
+---+---+-----+
|pos|key|value|
+---+---+-----+
|  0|  a|    b|
+---+---+-----+

pyspark.sql.functions.explode_outer pyspark.sql.functions.posexplode_outer