pyspark.sql.functions.array_distinct¶

pyspark.sql.functions.array_distinct(col: ColumnOrName) → pyspark.sql.column.Column[source]¶

Collection function: removes duplicate values from the array.

New in version 2.4.0.

Changed in version 3.4.0: Supports Spark Connect.

Parameters

colColumn or str: name of column or expression

Returns

Column: an array of unique values.

Examples

>>> df = spark.createDataFrame([([1, 2, 3, 2],), ([4, 5, 5, 4],)], ['data'])
>>> df.select(array_distinct(df.data)).collect()
[Row(array_distinct(data)=[1, 2, 3]), Row(array_distinct(data)=[4, 5])]

pyspark.sql.functions.array_prepend

pyspark.sql.functions.array_intersect