bitmap_count

Returnerar antalet angivna bitar i indatabitmappen.

Syntax

from pyspark.sql import functions as sf

sf.bitmap_count(col)

Parameterar

Examples

Exempel 1: Räkna angivna bitar i en bitmapp

from pyspark.sql import functions as sf
df = spark.createDataFrame([("FFFF",)], ["a"])
df.select(sf.bitmap_count(sf.to_binary(df.a, sf.lit("hex")))).show()

+-------------------------------+
|bitmap_count(to_binary(a, hex))|
+-------------------------------+
|                             16|
+-------------------------------+