[Enhancement] Support mv rewrite when select only with mv's group by key

kaijianding commented 3 days ago

Why I'm doing:

CREATE TABLE `test_pt` (
  `id` int(11) NULL COMMENT "id",
  `pt` date NOT NULL COMMENT "",
  `gmv` int(11) NULL COMMENT "gmv"
) ENGINE=OLAP
DUPLICATE KEY(`id`)
COMMENT "OLAP"
PARTITION BY date_trunc('day', pt)
DISTRIBUTED BY HASH(`pt`)
PROPERTIES (
"replication_num" = "1"
);

insert into test_pt values(1,'2024-06-28', 10);

CREATE MATERIALIZED VIEW `test_pt_mv` 
PARTITION BY (`pt`)
DISTRIBUTED BY RANDOM
REFRESH ASYNC START("2024-03-08 03:00:00") EVERY(INTERVAL 1 MINUTE)
PROPERTIES (
"replication_num" = "1"
)
AS SELECT pt, id, sum(gmv) AS sum_gmv
FROM test_pt
GROUP BY pt,id;

explain select pt,max(id),sum(gmv) from test_pt group by pt;

select pt,max(id),sum(gmv) from test_pt group by pt should be rewritten by test_pt_mv

What I'm doing:

What type of PR is this:

[ ] BugFix
[ ] Feature
[x] Enhancement
[ ] Refactor
[ ] UT
[ ] Doc
[ ] Tool

Does this PR entail a change in behavior?

[ ] Yes, this PR will result in a change in behavior.
[x] No, this PR will not result in a change in behavior.

Checklist:

[x] I have added test cases for my bug fix or my new feature
[ ] This pr needs user documentation (for new or modified features or behaviors)
- [ ] I have added documentation for my new feature or new function
[ ] This is a backport pr