seg

Calcular a secante da coluna de entrada. Compatível com Spark Connect.

Para a função Databricks SQL correspondente, consulte a funçãosec.

Sintaxe

Python

from pyspark.databricks.sql import functions as dbf

dbf.sec(col=<col>)

Parâmetros

Parâmetro	Tipo	Descrição
col	pyspark.sql.Column or column name	Ângulo em radianos

Devoluções

pyspark.sql.ColumnSecante do ângulo.

Exemplos

Python

from pyspark.databricks.sql import functions as dbf
spark.sql(
    "SELECT * FROM VALUES (PI() / 4), (PI() / 16) AS TAB(value)"
).select("*", dbf.sec("value")).show()

Output

+-------------------+------------------+
|              value|        SEC(value)|
+-------------------+------------------+
| 0.7853981633974...| 1.414213562373...|
|0.19634954084936...|1.0195911582083...|
+-------------------+------------------+

Python

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

Output

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