| listFunctions {SparkR} | R Documentation | 
Returns a list of functions registered in the specified database. This includes all temporary functions.
listFunctions(databaseName = NULL)
| databaseName | (optional) name of the database | 
a SparkDataFrame of the list of function descriptions.
since 2.2.0
## Not run: 
##D sparkR.session()
##D listFunctions()
## End(Not run)