Doris有支持多表 物化视图 的计划吗？ #5929
Description
例如：
create materialized view store_amt as select a.store_id, sum(sale_amt) from sales_records a join salerStore b on a.storeId = b.id group by a.store_id;
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例如：
create materialized view store_amt as select a.store_id, sum(sale_amt) from sales_records a join salerStore b on a.storeId = b.id group by a.store_id;