ALTER FUNCTION

Renames a function or changes the owner. Both the function name and data types are required. Only the owner or a superuser can rename a function. Only a superuser can change the owner of a function.

Syntax

ALTER FUNCTION function_name ( { [ py_arg_name py_arg_data_type | sql_arg_data_type } [ , ... ] ] )
     RENAME TO new_name

ALTER FUNCTION function_name ( { [ py_arg_name py_arg_data_type | sql_arg_data_type } [ , ... ] ] )
     OWNER TO { new_owner | CURRENT_USER | SESSION_USER }

Parameters

function_name

The name of the function to be altered. Either specify the name of the function in the current search path, or use the format schema_name.function_name to use a specific schema.

py_arg_name py_arg_data_type | sql_arg_data_type

Optional. A list of input argument names and data types for the Python user-defined function, or a list of input argument data types for the SQL user-defined function.

new_name

A new name for the user-defined function.

new_owner | CURRENT_USER | SESSION_USER

A new owner for the user-defined function.

Examples

The following example changes the name of a function from first_quarter_revenue to quarterly_revenue.

ALTER FUNCTION first_quarter_revenue(bigint, numeric, int) 
         RENAME TO quarterly_revenue;

The following example changes the owner of the quarterly_revenue function to etl_user.

ALTER FUNCTION quarterly_revenue(bigint, numeric) OWNER TO etl_user;