无效的列名“ ProposalTypeID”

Question

您能告诉我，在此存储过程中我在做什么错，它一直在抱怨“ ProposalTypeID”。 这是我的代码：

 SELECT assessmentecosystemcreditid,
       assessmentversionid,
       dbo.tblassessmentecosystemcredit.managementzoneid,
       (SELECT proposaltypeid
        FROM   tblassessment
        WHERE  assessmentid = (SELECT assessmentid
                               FROM   tblassessmentversion
                               WHERE  assessmentversionid =
               dbo.tblassessmentecosystemcredit.assessmentversionid)) AS
       ProposalTypeID,
       CASE
         WHEN sitevaluecurrentscore <= 17
              AND ( dbo.tblvegetationzone.eecid > 0 )
              AND ( proposaltypeid = 699 ) THEN 0
         ELSE numberofcredits
       END                                                            AS
       NumberOfCreditst
FROM   dbo.tblassessmentecosystemcredit
       INNER JOIN dbo.tblvegetationtype
               ON dbo.tblassessmentecosystemcredit.vegtypeid =
                  dbo.tblvegetationtype.vegtypeid
       INNER JOIN dbo.tblmanagementzone
               ON dbo.tblassessmentecosystemcredit.managementzoneid =
                  dbo.tblmanagementzone.managementzoneid
       INNER JOIN dbo.tblvegetationzone
               ON dbo.tblvegetationzone.vegetationzoneid =
                  dbo.tblmanagementzone.vegetationzoneid
WHERE  dbo.tblassessmentecosystemcredit.assessmentversionid =
       @AssessmentVersionID  

Answer 1

根据我在查询中看到的内容，您不能在CASE语句中引用proposaltypeid 。

表tblassessment不在顶级SELECT语句的FROM部分中。

虽然您也可以在其他表中有一个proposaltypeid ，但是我认为这是造成此问题的原因。

最后，在最后一个WHERE子句之前，您将需要一个LEFT JOIN （可以肯定）。

我想查询更改为下面的代码（会产生混乱的结果集），然后从那里调它（我不知道，如果你有一个相应的列assessmentid在其他表（这是在顶级SELECT ）。

如果这样做，则将LEFT JOIN的ON条件更改为

TBA.assessmentid = "referencedTable"."correspondingColumn"

SELECT assessmentecosystemcreditid,
       assessmentversionid,
       dbo.tblassessmentecosystemcredit.managementzoneid,
       (SELECT proposaltypeid
        FROM   tblassessment
        WHERE  assessmentid = (SELECT assessmentid
                               FROM   tblassessmentversion
                               WHERE  assessmentversionid =
            dbo.tblassessmentecosystemcredit.assessmentversionid)) AS ProposalTypeID,
       CASE
         WHEN sitevaluecurrentscore <= 17
              AND ( dbo.tblvegetationzone.eecid > 0 )
              AND ( proposaltypeid = 699 ) THEN 0
         ELSE numberofcredits
       END AS NumberOfCreditst
FROM   dbo.tblassessmentecosystemcredit
       INNER JOIN dbo.tblvegetationtype
               ON dbo.tblassessmentecosystemcredit.vegtypeid =
                  dbo.tblvegetationtype.vegtypeid
       INNER JOIN dbo.tblmanagementzone
               ON dbo.tblassessmentecosystemcredit.managementzoneid =
                  dbo.tblmanagementzone.managementzoneid
       INNER JOIN dbo.tblvegetationzone
               ON dbo.tblvegetationzone.vegetationzoneid =
                  dbo.tblmanagementzone.vegetationzoneid
       LEFT JOIN tblassessment TBA ON 1 = 1
WHERE  dbo.tblassessmentecosystemcredit.assessmentversionid =
       @AssessmentVersionID 

根据可用的信息，这是一个很笼统的答案，但我认为它将使您走上正确的道路。

更新：

我相信此查询将为您提供所需的信息：

SELECT assessmentecosystemcreditid,
       assessmentversionid,
       dbo.tblassessmentecosystemcredit.managementzoneid,
       (SELECT proposaltypeid
        FROM   tblassessment
        WHERE  assessmentid = (SELECT assessmentid
                               FROM   tblassessmentversion
                               WHERE  assessmentversionid =
            dbo.tblassessmentecosystemcredit.assessmentversionid)) AS ProposalTypeID,
       CASE
         WHEN sitevaluecurrentscore <= 17
              AND ( dbo.tblvegetationzone.eecid > 0 )
              AND ( proposaltypeid = 699 ) THEN 0
         ELSE numberofcredits
       END AS NumberOfCreditst
FROM   dbo.tblassessmentecosystemcredit
       INNER JOIN dbo.tblvegetationtype
               ON dbo.tblassessmentecosystemcredit.vegtypeid =
                  dbo.tblvegetationtype.vegtypeid
       INNER JOIN dbo.tblmanagementzone
               ON dbo.tblassessmentecosystemcredit.managementzoneid =
                  dbo.tblmanagementzone.managementzoneid
       INNER JOIN dbo.tblvegetationzone
               ON dbo.tblvegetationzone.vegetationzoneid =
                  dbo.tblmanagementzone.vegetationzoneid

       -- added/modified below JOINs
       INNER JOIN dbo.Assesmentversion AV ON 
         AV.assessmentversionid = dbo.tblassessmentecosystemcredit.assessmentversionid
       INNER JOIN tblassessment TBA ON 
         TBA.AssessmentID = AV.AssessmentID 
WHERE  dbo.tblassessmentecosystemcredit.assessmentversionid =
       @AssessmentVersionID