cos

Calcula el coseno de la columna de entrada. Soporta Spark Connect.

Para obtener la función SQL de Databricks correspondiente, consulte cos function.

Syntax

from pyspark.databricks.sql import functions as dbf

dbf.cos(col=<col>)

Parámetros

Devoluciones

pyspark.sql.Column: coseno del ángulo, como si lo calculase .java.lang.Math.cos()

Examples

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

+-------------------+------------------+
|              value|        COS(value)|
+-------------------+------------------+
|  3.141592653589...|              -1.0|
| 0.7853981633974...|0.7071067811865...|
|0.19634954084936...|0.9807852804032...|
+-------------------+------------------+

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

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