在 SQL 服务器中使用透视（错误）- 列名无效

Question

SELECT 
    [Reg. number], [Surname], 
    [SESREFDATETIME1], [ATTENDANCE1], 
    [SESREFDATETIME2], [ATTENDANCE2],
    [SESREFDATETIME3], [ATTENDANCE3],
    [SESREFDATETIME4], [ATTENDANCE4] 
FROM
    (SELECT
        [Reg. number], [Surname], 
        col + CAST(rn AS varchar(10)) col, 
        value
     FROM
        (SELECT
            [Reg. number], Surname,
            row_number() over(partition by [Reg. number] order by SESREFDATETIME) rn
         FROM #Temp) t
     CROSS APPLY
         (SELECT 'SESREFDATETIME', SESREFDATETIME 
          UNION ALL 
          SELECT 'ATTENDANCE', ATTENDANCE) c (col, value)
    ) x
PIVOT
    (max(value)
     for col in ([SESREFDATETIME1], [ATTENDANCE1], [SESREFDATETIME2],[ATTENDANCE2], [SESREFDATETIME3], [ATTENDANCE3], [SESREFDATETIME4],[ATTENDANCE4])
    ) p;

在我的程序中，我创建了一个 #temp 临时 table 并且我尝试在多个列中显示多行。我使用 pivot 的原因是因为这段代码动态创建并且行数未知。我是运行代码，但它给出了错误。我要疯了。找不到错误在哪里。它表明在交叉应用中存在无效的列名。我认为还有一个错误。它在错误的一面显示错误。测试table格式如下

Create table #Temp
(
    [Reg. number] int, 
    [Surname] Varchar(50), 
    SESREFDATETIME Varchar(80), 
    ATTENDANCE Varchar(10)
)

示例数据格式为

2005162 Abasov  04/09/2014 09:00 - 10:00    Y
2005458 Baxşiyev    15/04/2015 01:00 - 04:00    NULL
2005458 Baxşiyev    16/09/2014 14:00 - 17:00    Y
2005538 Abbasbəyli  13/10/2014 12:00 - 15:00    Y

Answer 1

您的 'cross apply x' 看不到 SESREFDATETIME 和 ATTENDANCE，如果您在 'subselect t' 中包含这些列，则交叉应用部分可以获得值

试试这个：

SELECT 
    [Reg. number], [Surname], 
    [SESREFDATETIME1], [ATTENDANCE1], 
    [SESREFDATETIME2], [ATTENDANCE2],
    [SESREFDATETIME3], [ATTENDANCE3],
    [SESREFDATETIME4], [ATTENDANCE4] 
FROM
    (SELECT
        [Reg. number], [Surname], 
        col + CAST(rn AS varchar(10)) col, 
        value
     FROM
        (SELECT
            [Reg. number], Surname,
            row_number() over(partition by [Reg. number] order by SESREFDATETIME) rn,
            SESREFDATETIME,
            ATTENDANCE
         FROM #Temp) t
     CROSS APPLY
         (SELECT 'SESREFDATETIME', SESREFDATETIME 
          UNION ALL 
          SELECT 'ATTENDANCE', ATTENDANCE) c (col, value)
    ) x
PIVOT
    (max(value)
     for col in ([SESREFDATETIME1], [ATTENDANCE1], [SESREFDATETIME2],[ATTENDANCE2], [SESREFDATETIME3], [ATTENDANCE3], [SESREFDATETIME4],[ATTENDANCE4])
    ) p;

在 SQL 服务器中使用透视（错误）- 列名无效

Using Pivoting in SQL Server (Error) - Invalid column name

sql-server

tsql

stored-procedures

pivot

mssql-jdbc