根据条件 SQL 服务器将单列求和为多列

Question

现在我正在根据零件、工作、机器和类型分组收集时间总和。

我希望根据类型将总时间拆分为多列而不是多行。我该怎么做？

这是我的代码

SELECT
    m.[machineName]
    ,pr.[jobNumber]
    ,p.[partNumber]
    ,sc.[type]
    ,SUM(pl.[elapsedTime]) AS elapsedTime 
FROM wincc.dbo.productionLog pl
    INNER JOIN wincc.dbo.machines m        ON pl.[machineId]       = m.id
    INNER JOIN wincc.dbo.productionRuns pr ON pl.[productionRunId] = pr.id
    INNER JOIN wincc.dbo.parts p           ON pr.[partId]          = p.Id
    INNER JOIN wincc.dbo.statusCodes sc    ON pl.[statusCodeId]    = sc.id
GROUP BY
    m.[machineName]
    ,pr.[jobNumber]
    ,p.[partNumber]
    ,sc.[type]

产生：

但我想要：

谢谢大家！

Answer 1

这是 table pivoting 的一种形式。这是使用 conditional aggregation 执行此操作的一种方法：

SELECT
    m.[machineName]
    ,pr.[jobNumber]
    ,p.[partNumber]
    ,SUM(CASE WHEN sc.Type = 'planned downtime' then pl.[elapsedTime] END) AS plannedDT
    ,SUM(CASE WHEN sc.Type = 'unplanned downtime' then pl.[elapsedTime] END) AS unplannedDT
    ,SUM(CASE WHEN sc.Type = 'production' then pl.[elapsedTime] END) AS production
    ,SUM(CASE WHEN sc.Type = 'rework' then pl.[elapsedTime] END) AS rework
FROM wincc.dbo.productionLog pl
    INNER JOIN wincc.dbo.machines m        ON pl.[machineId]       = m.id
    INNER JOIN wincc.dbo.productionRuns pr ON pl.[productionRunId] = pr.id
    INNER JOIN wincc.dbo.parts p           ON pr.[partId]          = p.Id
    INNER JOIN wincc.dbo.statusCodes sc    ON pl.[statusCodeId]    = sc.id
GROUP BY
    m.[machineName]
    ,pr.[jobNumber]
    ,p.[partNumber]

根据条件 SQL 服务器将单列求和为多列

Sum a Single column into multiple columns based on criteria SQL Server

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