bitmap_construct_agg

Aggregate function: returns a bitmap with the positions of the bits set from all the values from the input column. The input column will most likely be bitmap_bit_position().

Syntax

import pyspark.sql.functions as sf

sf.bitmap_construct_agg(col=<col>)

Parameters

Parameter	Type	Description
col	pyspark.sql.Column or str	The input column will most likely be bitmap_bit_position().

Examples

Example 1: Using bitmap_construct_agg function with bitmap_bit_position.

import pyspark.sql.functions as sf
df = spark.createDataFrame([(1,),(2,),(3,)], ["a"])
df.select(
    sf.bitmap_construct_agg(sf.bitmap_bit_position('a'))
).show()

+--------------------------------------------+
|bitmap_construct_agg(bitmap_bit_position(a))|
+--------------------------------------------+
|                        [07 00 00 00 00 0...|
+--------------------------------------------+