[feat](mtmv) Support grouping_sets rewrite when query rewrite by materialized view (#36056)#37436
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morrySnow merged 1 commit intoapache:branch-2.1from Jul 8, 2024
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…rialized view (apache#36056) Support grouping_sets, cube, rollup query rewrite by materialized view, if mv group by fields contains all the group by fields in query. For example as following: CREATE MATERIALIZED VIEW mv_1 BUILD IMMEDIATE REFRESH AUTO ON MANUAL DISTRIBUTED BY RANDOM BUCKETS 2 PROPERTIES ('replication_num' = '1') AS select o_orderstatus, o_orderdate, o_orderpriority, sum(o_totalprice) as sum_total, max(o_totalprice) as max_total, min(o_totalprice) as min_total, count(*) as count_all, bitmap_union( to_bitmap( case when o_shippriority > 1 and o_orderkey IN (1, 3) then o_custkey else null end ) ) as bitmap_union_basic from orders group by o_orderstatus, o_orderdate, o_orderpriority; the query following can rewrite successfully by mv above select o_orderstatus, o_orderdate, o_orderpriority, grouping_id(o_orderstatus, o_orderdate, o_orderpriority), grouping_id(o_orderstatus, o_orderdate), grouping(o_orderdate), sum(o_totalprice), max(o_totalprice), min(o_totalprice), count(*), count(distinct case when o_shippriority > 1 and o_orderkey IN (1, 3) then o_custkey else null end) from orders group by GROUPING SETS ((o_orderstatus, o_orderdate), (o_orderpriority), (o_orderstatus), ()); if query group by fields is sub of mv group by fields, and the query aggregate function extends `RollupTrait` it can also rewrites successfully, for example query as following. this is applicable for `CUBE`, `ROLLUP` select o_orderstatus, o_orderdate, grouping_id(o_orderstatus, o_orderdate), grouping(o_orderdate), sum(o_totalprice), max(o_totalprice), min(o_totalprice), count(*), count(distinct case when o_shippriority > 1 and o_orderkey IN (1, 3) then o_custkey else null end) from orders group by GROUPING SETS ((o_orderstatus, o_orderdate), (o_orderdate),());
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Proposed changes
cherry pick to 2.1
pr: #36056
commitId: 569c977