创建物化视图报错

sr版本 2.2.7
原表信息:


更新模型
创建视图语句:
CREATE MATERIALIZED VIEW product_kdj AS
SELECT product_id, SUM(amount), sum(volume)
FROM dws_dy_date_event
GROUP BY product_id
报错信息:
The aggregation type of column[amount] must be same as the aggregate type of base column in aggregate table

根据官方文档:https://docs.starrocks.io/zh-cn/2.2/using_starrocks/Materialized_view#注意事项 中描述,应该只有主键模型不支持物化视图,为啥报错?