doris版本： 3.0.6/3.1.1
创建 paimon catalog paimon_s3_dh;
创建物化视图：
create materialized view mv_dwd_agg_3 BUILD IMMEDIATE REFRESH COMPLETE ON SCHEDULE EVERY 1 hour as select id,sum(a) as a from paimon_s3_dh.test.dwd_15m group by id;
设置外部透明改写参数：
SET materialized_view_rewrite_enable_contain_external_table = true;
查询计划中没有任何物化视图相关信息：
explain select id,sum(a) as a from paimon_s3_dh.test.dwd_15m group by id;
物化视图状态：
