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branch-4.0: [opt](mtmv) Support window function rewrite when materialized view contains window function #55066 #57839

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yiguolei merged 1 commit into from
Nov 13, 2025
Merged

branch-4.0: [opt](mtmv) Support window function rewrite when materialized view contains window function #55066 #57839

yiguolei merged 1 commit into from
Nov 13, 2025

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@github-actions github-actions bot commented Nov 10, 2025

Cherry-picked from #55066

@seawinde
[opt](mtmv) Support window function rewrite when materialized view co…
9829996 
…ntains window function (#55066)

### What problem does this PR solve?

Support window function rewrite when materialized view contains window
function

Such as mv def is as following:

        CREATE MATERIALIZED VIEW mv1
        BUILD IMMEDIATE REFRESH COMPLETE ON MANUAL
        DISTRIBUTED BY RANDOM BUCKETS 2
        PROPERTIES ('replication_num' = '1') 
        AS
        select *
        from (
        select 
        o_orderkey,
        FIRST_VALUE(o_custkey) OVER (
                PARTITION BY o_orderdate 
                ORDER BY o_totalprice NULLS LAST
                RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW
            ) AS first_value,
        RANK() OVER (
                PARTITION BY o_orderdate, o_orderstatus 
                ORDER BY o_totalprice NULLS LAST
                RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW
            ) AS rank_value,
        LAG(l_extendedprice, 1, 0) over (partition by o_orderdate, l_shipdate order by l_quantity) AS lag_value 
        from 
        lineitem2
        left join orders2 on l_orderkey = o_orderkey and l_shipdate = o_orderdate
        ) t
        where o_orderkey > 1;

if query as following, this can use mv to represent query

select *
            from (
            select 
            o_orderkey,
            FIRST_VALUE(o_custkey) OVER (
                    PARTITION BY o_orderdate 
                    ORDER BY o_totalprice NULLS LAST
                    RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW
                ) AS first_value,
            RANK() OVER (
                    PARTITION BY o_orderdate, o_orderstatus 
                    ORDER BY o_totalprice NULLS LAST
                    RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW
                ) AS rank_value,
            LAG(l_extendedprice, 1, 0) over (partition by o_orderdate, l_shipdate order by l_quantity) AS lag_value 
            from 
            lineitem2
            left join orders2 on l_orderkey = o_orderkey and l_shipdate = o_orderdate
            ) t
            where o_orderkey > 2;

explain result is as follwing:

+----------------------------------------------------------------------------------------+
| Explain String(Nereids Planner)                                                        |
+----------------------------------------------------------------------------------------+
| PLAN FRAGMENT 0                                                                        |
|   OUTPUT EXPRS:                                                                        |
|     o_orderkey[#4]                                                                     |
|     first_value[#5]                                                                    |
|     rank_value[#6]                                                                     |
|     lag_value[#7]                                                                      |
|   PARTITION: RANDOM                                                                    |
|                                                                                        |
|   HAS_COLO_PLAN_NODE: false                                                            |
|                                                                                        |
|   VRESULT SINK                                                                         |
|      MYSQL_PROTOCAL                                                                    |
|                                                                                        |
|   0:VOlapScanNode(445)                                                                 |
|      TABLE: regression_test_nereids_rules_p0_mv_window.mv1(mv1), PREAGGREGATION: ON    |
|      PREDICATES: (o_orderkey[#0] > 2)                                                  |
|      partitions=1/1 (mv1)                                                              |
|      tablets=2/2, tabletList=1755678381149,1755678381151                               |
|      cardinality=1, avgRowSize=0.0, numNodes=1                                         |
|      pushAggOp=NONE                                                                    |
|      final projections: o_orderkey[#0], first_value[#1], rank_value[#2], lag_value[#3] |
|      final project output tuple id: 1                                                  |
|                                                                                        |
|                                                                                        |
| ========== MATERIALIZATIONS ==========                                                 |
|                                                                                        |
| MaterializedView                                                                       |
| MaterializedViewRewriteSuccessAndChose:                                                |
|   internal.regression_test_nereids_rules_p0_mv_window.mv1 chose                        |
|                                                                                        |
| MaterializedViewRewriteSuccessButNotChose:                                             |
|                                                                                        |
| MaterializedViewRewriteFail:                                                           |
|                                                                                        |
|                                                                                        |
| ========== STATISTICS ==========                                                       |
| planed with unknown column statistics                                                  |
+----------------------------------------------------------------------------------------+
@github-actions github-actions bot requested a review from yiguolei as a code owner November 10, 2025 03:08
@Thearas
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Thearas commented Nov 10, 2025

Thank you for your contribution to Apache Doris.
Don't know what should be done next? See How to process your PR.

Please clearly describe your PR:

  1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
  2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
  3. What features were added. Why was this function added?
  4. Which code was refactored and why was this part of the code refactored?
  5. Which functions were optimized and what is the difference before and after the optimization?

@dataroaring dataroaring reopened this Nov 10, 2025
@Thearas
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Thearas commented Nov 10, 2025

run buildall

@hello-stephen
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hello-stephen commented Nov 10, 2025

FE UT Coverage Report

Increment line coverage `` 🎉
Increment coverage report
Complete coverage report

@yiguolei yiguolei merged commit 518105f into branch-4.0 Nov 13, 2025
25 of 26 checks passed
@github-actions github-actions bot deleted the auto-pick-55066-branch-4.0 branch November 13, 2025 08:54
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5 participants

@Thearas @hello-stephen @yiguolei @dataroaring @seawinde