lava-oushudb-dt-sql-parser/test/parser/flinksql/syntax/fixtures/alterFunction.sql

ALTER FUNCTION tempFunction AS 'SimpleUdf';

ALTER TEMPORARY FUNCTION IF EXISTS tempFunction AS 'SimpleUdf';

ALTER TEMPORARY SYSTEM FUNCTION IF EXISTS tempFunction AS 'SimpleUdf';

ALTER FUNCTION myudf AS 'com.example.MyUdf' LANGUAGE PYTHON;