ALTER FUNCTION

Introduced or updated: v1.2.116

Alters an external function.

Syntax

ALTER FUNCTION [IF NOT EXISTS] <function_name> 
    AS (<input_param_types>) RETURNS <return_type> LANGUAGE <language_name> 
    HANDLER = '<handler_name>' ADDRESS = '<udf_server_address>' 
    [DESC='<description>']

Parameter	Description
<function_name>	The name of the function.
<lambda_expression>	The lambda expression or code snippet defining the function's behavior.
DESC='<description>'	Description of the UDF.
<<input_param_names>	A list of input parameter names. Separated by comma.
<<input_param_types>	A list of input parameter types. Separated by comma.
<return_type>	The return type of the function.
LANGUAGE	Specifies the language used to write the function. Available values: python.
HANDLER = '<handler_name>'	Specifies the name of the function's handler.
ADDRESS = '<udf_server_address>'	Specifies the address of the UDF server.

Examples

-- Create an external function
CREATE FUNCTION gcd (INT, INT) RETURNS INT LANGUAGE python HANDLER = 'gcd' ADDRESS = 'http://0.0.0.0:8815';

-- Modify the handler of the external function
ALTER FUNCTION gcd (INT, INT) RETURNS INT LANGUAGE python HANDLER = 'gcd_new' ADDRESS = 'http://0.0.0.0:8815';