SQL 命令DDL 命令用户定义函数ALTER FUNCTION本页总览ALTER FUNCTION引入或更新: v1.2.116 修改用户定义函数。 语法 ALTER FUNCTION [ IF NOT EXISTS ] <function_name> AS (<input_param_names>) -> <lambda_expression> [ DESC='<description>' ] 示例 -- 创建一个UDFCREATE FUNCTION a_plus_3 AS (a) -> a+3+3;-- 修改UDF的lambda表达式ALTER FUNCTION a_plus_3 AS (a) -> a+3;