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我将如何将 PERSIST 函数添加到排名中？

我计划从这段代码创建一个视图，并将经常在其上运行子查询。所以当然我不希望排名数字根据我运行的任何子查询而改变。我希望它是一个正常的、非公式的列。

    SELECT  a.player_id, a.full_name, a.first_name, a.last_name, d.[rank], 
    d.column3, a.tournament, c.column5, a.[year], a.[round], 
    a.score, RANK() OVER (PARTITION BY a.[round] + b.tournament_id + a.
    [year] ORDER BY a.score) AS round_leaderboard
    FROM            df1 AS a JOIN
    df2 AS b ON a.tournament = b.tournament JOIN
    df3 AS c ON c.[Event] = a.tournament
    LEFT JOIN df4 as d
    On a.player_id=d.player_id and a.[year]=d.[year]
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1 回答 1

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您可以使用物化视图：

create view myview with schemabinding as
    SELECT  a.player_id, a.full_name, a.first_name, a.last_name, d.[rank], 
            d.column3, a.tournament, c.column5, a.[year], a.[round], 
            a.score,
            RANK() OVER (PARTITION BY a.[round] + b.tournament_id + a.[year] ORDER BY a.score) AS round_leaderboard
    FROM df1 a JOIN
         df2 b
         ON a.tournament = b.tournament JOIN
         df3 c
         ON c.[Event] = a.tournament LEFT JOIN
         df4 d
         On a.player_id = d.player_id and a.[year] = d.[year];

create index idx_myview_playerid on myview(playerid);

文档中解释了物化视图。

于 2018-03-02T02:04:17.270 回答