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Computes the square root of the specified float value. Supports Spark Connect.
For the corresponding Databricks SQL function, see sqrt function.
Syntax
from pyspark.databricks.sql import functions as dbf
dbf.sqrt(col=<col>)
Parameters
| Parameter | Type | Description |
|---|---|---|
col |
pyspark.sql.Column or column name |
target column to compute on. |
Returns
pyspark.sql.Column: column for computed results.
Examples
from pyspark.databricks.sql import functions as dbf
spark.sql(
"SELECT * FROM VALUES (-1), (0), (1), (4), (NULL) AS TAB(value)"
).select("*", dbf.sqrt("value")).show()
+-----+-----------+
|value|SQRT(value)|
+-----+-----------+
| -1| NaN|
| 0| 0.0|
| 1| 1.0|
| 4| 2.0|
| NULL| NULL|
+-----+-----------+