如何按条件从多个类别中查找日期

Question

我需要根据条件查找不同类别的数据：Breakground、Energization 和 PR。前两类没问题。数据是一对一的映射。问题是公关类别。此类别中有多个日期。我需要在此类别中找到 min(MilestoneDate)，但 min(MilesotoneDate) 必须大于今天且最接近今天。

Following are table data:

Site   Building       MilestoneID   MilestoneType  MilestoneDate
 AGE     building1     MIC.MS.1000    Breakground    1/1/18
 AGE     building1     MIC.ACT.1000   Energization   2/3/19
 AGE     building1     PTM.B1.1130    PR             2/5/19
 AGE     building1     PTM.B1.1140    PR             3/4/20
 AGE     building1     PTM.B1.1150    PR             12/25/20
 AGE     building1     PTM.B1.1160    PR             5/25/22
 AGE     building2     MIC.MS.1000    Breakground    2/2/19
 AGE     building2     MIC.ACT.1000   Energization   12/5/19
 AGE     building2     PTM.B2.1130    PR             3/5/20
 AGE     building2      PTM.B2.1140   PR             8/10/20
 AGE     building2      PTM.B2.1150   PR             3/4/21
 AGE     building2      PTM.B2.1160   PR             5/4/22
 OCA     building1     MIC.MS.1000    Breakground    4/2/19
 OCA     building1     MIC.ACT.1000   Energization   5/4/20  
 OCA     building1      PTM.B1.1130   PR             6/8/21
 OCA     building1     PTM.B1.1140    PR             12/2/21
 OCA     building1     PTM.B1.1150    PR             3/5/22
 OCA     building1     PTM.B1.1160    PR             12/30/22

WITH managementview AS ( SELECT * 来自 management_view_nancy 米左连接 ( SELECT * 从（ SELECT projectobjectid, id AS activity_id, 完成日期作为里程碑日期，命名为里程碑来自 activity 其中 ds = ( SELECT 最大值(ds) 来自 activity) 联合所有 SELECT projectobjectid, id AS activity_id, Min(finishdate) AS 完成日期，姓名来自 activity 其中 id 在 ('LRP-RVA-B3-FS1000', 'LRP-RVA-B3-PR1000', 'LRP-RVA-B3-PR1500') AND projectobjectid = 4908 GROUP BY projectobjectid, ID，姓名) ) p ON try_cast(m.objectid 作为 DOUBLE) = p.projectobjection AND m.id = p.activity_id ) , pr AS ( SELECT *, row_number() OVER (partition BY site, building, milestonetype ORDER BY try(cast(substr(milestonedate, 1, 10) AS date))) rn FROM管理视图 WHERE try(cast(substr(milestonedate, 1, 10) AS date)) >= CURRENT_DATE AND trim（里程碑类型）= 'PR') SELECT 网站，建造， ID，里程碑类型，里程碑，里程碑日期 FROM管理视图 WHERE milestonetype IN ('Breakground', 'Energization') 联合所有 SELECT 网站，建造， ID，里程碑类型，里程碑，里程碑日期从公关其中 rn = 1

查询正常，但没有得到我想要的结果。我需要 PR 类别中的 min(MilestoneDate)，并且 min(MilestoneDate) 应该大于今天但最接近今天。此查询仍然在 PR 类别中为我提供多个 MilestoneDate。任何建议将不胜感激

Answer 1

我建议使用 CTE 引入要保留的 PR 数据点：

WITH cte AS (
    SELECT *,
        ROW_NUMBER() OVER (PARTITION BY Site, Building ORDER BY MilestoneDate) rn
    FROM managementview
    WHERE MilestoneDate >= CURRENT_DATE AND milestonetype = 'PR'
)

SELECT site, building, id, milestonetype, milestone, milestonedate
FROM managementview
WHERE milestonetype IN ('Breakground', 'Energization')
UNION ALL
SELECT site, building, id, milestonetype, milestone, milestonedate
FROM cte
WHERE rn = 1;

如果您的 Presto 版本不支持 CTE，请尝试内联它：

SELECT site, building, id, milestonetype, milestone, milestonedate
FROM managementview
WHERE milestonetype IN ('Breakground', 'Energization')
UNION ALL
SELECT site, building, id, milestonetype, milestone, milestonedate
FROM
(
    SELECT m.*,
        ROW_NUMBER() OVER (PARTITION BY Site, Building ORDER BY MilestoneDate) rn
    FROM managementview m
    WHERE MilestoneDate >= CURRENT_DATE AND milestonetype = 'PR'
) t
WHERE rn = 1;

如何按条件从多个类别中查找日期

How to find dates from multiple categories by conditions

sql

presto