Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Check if the function with the specified name exists. This can either be a temporary function or a function.
Syntax
functionExists(functionName: str, dbName: str = None)
Parameters
| Parameter | Type | Description |
|---|---|---|
functionName |
str | Name of the function to check existence. Can be qualified with catalog name. |
dbName |
str, optional | Name of the database to check function existence in. |
Returns
bool
Indicating whether the function exists.
Notes
If no database is specified, the current database and catalog are used. This API includes all temporary functions.
Examples
spark.catalog.functionExists("count")
# True
# Using the fully qualified name for function name.
spark.catalog.functionExists("default.unexisting_function")
# False
spark.catalog.functionExists("spark_catalog.default.unexisting_function")
# False