seawinde opened a new pull request, #40942:
URL: https://github.com/apache/doris/pull/40942
## Proposed changes
Support partition trace form multi join input when create parition
materialized view.
`o_orderdate` is the partition column of `orders`, `l_shipdate` is the
partition column of `lineitem`
Such as mv def is as following, if data in `lineitem` or `orders` change,
the materialized view mv1_0 can partition increment update.
```sql
CREATE MATERIALIZED VIEW mv1_0
BUILD IMMEDIATE REFRESH COMPLETE ON MANUAL
PARTITION BY (o_orderdate)
DISTRIBUTED BY RANDOM BUCKETS 3
PROPERTIES ('replication_num' = '1')
AS
select o_orderdate, count(l_shipdate)
from lineitem
inner join orders
on l_shipdate = o_orderdate
group by o_orderdate
```
Note: we only support inner join type, other join type would be supported
later
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