expm1

Calcule a exponencial do valor dado menos um. Compatível com Spark Connect.

Para a função Databricks SQL correspondente, consulte a funçãoexpm1.

Sintaxe

Python

from pyspark.databricks.sql import functions as dbf

dbf.expm1(col=<col>)

Parâmetros

Parâmetro	Tipo	Descrição
col	pyspark.sql.Column or column name	coluna para calcular a exponencial.

Devoluções

pyspark.sql.Column: exponencial menos um.

Exemplos

Python

from pyspark.databricks.sql import functions as dbf
df = spark.sql("SELECT id AS value FROM RANGE(5)")
df.select("*", dbf.expm1(df.value)).show()

Output

+-----+------------------+
|value|      EXPM1(value)|
+-----+------------------+
|    0|               0.0|
|    1| 1.718281828459...|
|    2|  6.38905609893...|
|    3|19.085536923187...|
|    4|53.598150033144...|
+-----+------------------+

Python

from pyspark.databricks.sql import functions as dbf
spark.sql(
    "SELECT * FROM VALUES (FLOAT('NAN')), (NULL) AS TAB(value)"
).select("*", dbf.expm1("value")).show()

Output

+-----+------------+
|value|EXPM1(value)|
+-----+------------+
|  NaN|         NaN|
| NULL|        NULL|
+-----+------------+