array_size

Mengembalikan jumlah total elemen dalam array. Fungsi mengembalikan null untuk input null.

Syntax

from pyspark.sql import functions as sf

sf.array_size(col)

Parameter-parameternya

Pengaturan	Tipe	Description
col	pyspark.sql.Column atau str	Nama kolom atau ekspresi yang mewakili array.

Pengembalian Barang

pyspark.sql.Column: Kolom baru yang berisi ukuran setiap array.

Examples

Contoh 1: Penggunaan dasar dengan array bilangan bulat

from pyspark.sql import functions as sf
df = spark.createDataFrame([([2, 1, 3],), (None,)], ['data'])
df.select(sf.array_size(df.data)).show()

+----------------+
|array_size(data)|
+----------------+
|               3|
|            NULL|
+----------------+

Contoh 2: Penggunaan dengan array string

from pyspark.sql import functions as sf
df = spark.createDataFrame([(['apple', 'banana', 'cherry'],)], ['data'])
df.select(sf.array_size(df.data)).show()

+----------------+
|array_size(data)|
+----------------+
|               3|
+----------------+

Contoh 3: Penggunaan dengan array tipe campuran

from pyspark.sql import functions as sf
df = spark.createDataFrame([(['apple', 1, 'cherry'],)], ['data'])
df.select(sf.array_size(df.data)).show()

+----------------+
|array_size(data)|
+----------------+
|               3|
+----------------+

Contoh 4: Penggunaan dengan array array

from pyspark.sql import functions as sf
df = spark.createDataFrame([([[2, 1], [3, 4]],)], ['data'])
df.select(sf.array_size(df.data)).show()

+----------------+
|array_size(data)|
+----------------+
|               2|
+----------------+

Contoh 5: Penggunaan dengan array kosong

from pyspark.sql import functions as sf
from pyspark.sql.types import ArrayType, IntegerType, StructType, StructField
schema = StructType([
  StructField("data", ArrayType(IntegerType()), True)
])
df = spark.createDataFrame([([],)], schema=schema)
df.select(sf.array_size(df.data)).show()

+----------------+
|array_size(data)|
+----------------+
|               0|
+----------------+