是否可以查询 SQL 数据透视表并将输出加入另一个 select 语句？

Question

我在 SQL 中有一个数据透视表类型的报告（作为视图创建）。

工单编号为行，工单状态为列。

数据中的值是工单在该状态下花费的总时间的时间戳 (hh:mm:ss)。

SQL 数据透视视图示例（注意：未列出所有状态（参见 SQL 数据透视查询所有 ）：

ticket_number   closed    completed   new       waiting-1   
22              0:00:00   0:00:00     0:00:00   0:00:00
32              0:00:00   0:00:00     6:00:01   0:00:00

SQL 数据透视查询：

v_pivottime

WITH t AS (
    select 
        ticket_number,
        ISNULL(status,'null') status,
        update_date,
        row_number() OVER (PARTITION BY ticket_number ORDER BY update_date) rn
    from xxx.dbo.report
), s AS (
    SELECT 
        t1.ticket_number,
        t1.status,
        t1.update_date,
        t2.update_date prevdate,
        case when t2.status=t1.status then DATEDIFF(s, t2.update_date, t1.update_date) end dif
    FROM t t1
    LEFT JOIN t t2 ON t1.ticket_number=t2.ticket_number AND t1.rn=t2.rn+1
)
SELECT *
FROM (
    SELECT
        ticket_number,
        [status],
        cast(dateadd(s,sum(dif),0) as time(0)) [time]
    FROM s
    GROUP BY ticket_number,status )  src
PIVOT
(
  min([time])
  for [status] in ([Closed], [Complete], [New], [Waiting-1], [Waiting-2], [Waiting-3], [stoptime], [Research-1], [Research-2], [Resolved], [Special Request], [Opened Request], [null])
) piv;

查询视图（下方）我想添加（加入？）数据透视输出，并在顶部（列）添加状态名称以及 [=47= 中的值输出]

v_last_update

select
        ctr1.ticket_number,
        ctr1.status,
        ctr1.create_date,
        ctr1.created_by,
        ctr1.customer,
        ctr1.description,
        ctr1.update_sequence,
        ctr1.update_date        
FROM    
        xx.dbo.report ctr1
JOIN    (
                select ticket_number as ticket_number_d,
                MAX(update_date) as max_update_date,
                MAX(update_sequence) as max_ update_sequence
                from xx.dbo.report
                group by ticket_number
        ) ctr2

ON      ctr1.ticket_number = ctr2.ticket_number_d
AND     ctr1.update_date = ctr2.max_update_date
AND     ctr1.update_sequence = ctr2.max_update_sequence
WHERE   customer <> ‘Bread’
ORDER BY max_update_date ASC;

*想看看是否有一种方法可以从 v_last_update 查询中的票号执行 vlookup 类型的交易，并将列添加到输出中列的末尾。想为每个状态添加一列并插入该票证状态的时间。这可能让我发疯吗！

谢谢！

-P

Answer 1

除了我的评论之外，您还可以让 Pivot 部分成为 CTE：

（未经测试）

WITH t AS (
    select 
        ticket_number,
        ISNULL(status,'null') status,
        update_date,
        row_number() OVER (PARTITION BY ticket_number ORDER BY update_date) rn
    from xxx.dbo.report
), s AS (
    SELECT 
        t1.ticket_number,
        t1.status,
        t1.update_date,
        t2.update_date prevdate,
        case when t2.status=t1.status then DATEDIFF(s, t2.update_date, t1.update_date) end dif
    FROM t t1
    LEFT JOIN t t2 ON t1.ticket_number=t2.ticket_number AND t1.rn=t2.rn+1
)
,pivotPart AS
(
    SELECT *
    FROM (
        SELECT
            ticket_number,
            [status],
            cast(dateadd(s,sum(dif),0) as time(0)) [time]
        FROM s
        GROUP BY ticket_number,status )  src
    PIVOT
    (
      min([time])
      for [status] in ([Closed], [Complete], [New], [Waiting-1], [Waiting-2], [Waiting-3], [stoptime], [Research-1], [Research-2], [Resolved], [Special Request], [Opened Request], [null])
    ) piv
)
select
        ctr1.ticket_number,
        ctr1.status,
        ctr1.create_date,
        ctr1.created_by,
        ctr1.customer,
        ctr1.description,
        ctr1.update_sequence,
        ctr1.update_date,
        pivotPart.*        
FROM    
        xx.dbo.report ctr1
JOIN pivotPart ON ctr1.ticket_number=pivotPart.ticket_number
JOIN    (
                select ticket_number as ticket_number_d,
                MAX(update_date) as max_update_date,
                MAX(update_sequence) as max_ update_sequence
                from xx.dbo.report
                group by ticket_number
        ) ctr2

ON      ctr1.ticket_number = ctr2.ticket_number_d
AND     ctr1.update_date = ctr2.max_update_date
AND     ctr1.update_sequence = ctr2.max_update_sequence
WHERE   customer <> ‘Bread’
ORDER BY max_update_date ASC;

Answer 2

实际上，弄清楚这比我想象的要容易得多。

我所做的是将 select 语句和数据透视查询转换为单独的视图。之后，加入 select 视图，透视视图打开 ticket_number。它返回了与 select 语句票号内联的数据透视视图中的所有列。现场检查，一切顺利！

谢谢大家的帮助，不胜感激！

是否可以查询 SQL 数据透视表并将输出加入另一个 select 语句？

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