inline_outer

Meledakkan array struktur ke dalam tabel. Tidak seperti sebaris, jika array null atau kosong maka null diproduksi untuk setiap kolom berlapis.

Syntax

from pyspark.sql import functions as sf

sf.inline_outer(col)

Parameter-parameternya

Pengaturan	Tipe	Description
col	pyspark.sql.Column atau nama kolom	Kolom input nilai yang akan meledak.

Pengembalian Barang

pyspark.sql.Column: ekspresi generator dengan hasil sebaris meledak.

Examples

from pyspark.sql import functions as sf
df = spark.sql('SELECT * FROM VALUES (1,ARRAY(NAMED_STRUCT("a",1,"b",2), NULL, NAMED_STRUCT("a",3,"b",4))), (2,ARRAY()), (3,NULL) AS t(i,s)')
df.printSchema()

root
 |-- i: integer (nullable = false)
 |-- s: array (nullable = true)
 |    |-- element: struct (containsNull = true)
 |    |    |-- a: integer (nullable = false)
 |    |    |-- b: integer (nullable = false)

df.select('*', sf.inline_outer('s')).show(truncate=False)

+---+----------------------+----+----+
|i  |s                     |a   |b   |
+---+----------------------+----+----+
|1  |[{1, 2}, NULL, {3, 4}]|1   |2   |
|1  |[{1, 2}, NULL, {3, 4}]|NULL|NULL|
|1  |[{1, 2}, NULL, {3, 4}]|3   |4   |
|2  |[]                    |NULL|NULL|
|3  |NULL                  |NULL|NULL|
+---+----------------------+----+----+