This is the documentation for CDH 5.1.x. Documentation for other versions is available at Cloudera Documentation.
DROP FUNCTION Statement
Removes a user-defined function (UDF), so that it is not available for execution during Impala SELECT or INSERT operations.
Syntax:
DROP [AGGREGATE] FUNCTION [IF EXISTS] [db_name.]function_name(type[, type...])
Statement type: DDL
Usage notes:
Because the same function name could be overloaded with different argument signatures, you specify the argument types to identify the exact function to drop.
Cancellation: Cannot be cancelled.
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