csc
Calcule la cosécante de la colonne d'entrée. Prend en charge Spark Connect.
Pour la fonction Databricks SQL correspondante, consultez la fonctioncsc.
Syntaxe
Python
from pyspark.sql import functions as dbf
dbf.csc(col=<col>)
parameter
parameter | Type | Description |
|---|---|---|
|
| angle en radians. |
Renvoie
pyspark.sql.Column: cosécante de l'angle.
Exemples
Python
from pyspark.sql import functions as dbf
spark.sql("SELECT * FROM VALUES (PI() / 2), (PI() / 4) AS TAB(value)").select("*", dbf.csc("value")).show()
Output
+------------------+------------------+
| value| CSC(value)|
+------------------+------------------+
|1.5707963267948...| 1.0|
|0.7853981633974...|1.4142135623730...|
+------------------+------------------+
Python
from pyspark.sql import functions as dbf
spark.sql("SELECT * FROM VALUES (0.0), (FLOAT('NAN')), (NULL) AS TAB(value)").select("*", dbf.csc("value")).show()
Output
+-----+----------+
|value|CSC(value)|
+-----+----------+
| 0.0| Infinity|
| NaN| NaN|
| NULL| NULL|
+-----+----------+