从DNN用户数据进行SQL数据透视

Question

我试图将数据从DNN数据库导出到新系统，所以我试图首先将DNN数据转换为更逻辑的形式...但是我无法使代码正常工作。

谁能看到错在哪里？

我收到的错误提示第一行的2个字段是无效的列名？

SELECT [Rownumber], [columnheading]

FROM
(
  SELECT

     udd1.UserDefinedRowId as Rownumber, 
     udf1.FieldTitle as columnheading,
     convert(nvarchar(max),udd1.FieldValue) as newFieldValue 
  FROM UserDefinedData udd1

  INNER JOIN UserDefinedFields udf1
    ON udf1.UserDefinedFieldId = udd1.UserDefinedFieldId

  INNER JOIN UserDefinedRows udr1 
    ON udr1.UserDefinedRowId = udd1.UserDefinedRowId
    WHERE udr1.ModuleId = 3806

) AS UserData

PIVOT

(
  MAX(Rownumber)

  FOR columnheading IN  ( "Evidence", "Contact", "Action Required")

) AS PivotTable;

Answer 1

我认为您正在寻找的数据透视输出是newfieldvalue的，因此它必须进入max列并选择必须列出的列，如下所示：

SELECT [Rownumber], [Evidence], [Contact], [Action Required]
FROM
(
  SELECT

     udd1.UserDefinedRowId as Rownumber, 
     udf1.FieldTitle as columnheading,
     convert(nvarchar(max),udd1.FieldValue) as newFieldValue 
  FROM UserDefinedData udd1

  INNER JOIN UserDefinedFields udf1
    ON udf1.UserDefinedFieldId = udd1.UserDefinedFieldId

  INNER JOIN UserDefinedRows udr1 
    ON udr1.UserDefinedRowId = udd1.UserDefinedRowId
    WHERE udr1.ModuleId = 3806

) AS UserData
PIVOT
(
  MAX(newFieldValue)
  FOR columnheading IN  ( [Evidence], [Contact], [Action Required])
) AS PivotTable;