Question

获取错误：

子查询返回的值超过1。当子查询遵循=，！=，＆lt;，＆lt; =，＆gt;，＆gt; =或子查询用作表达式时，不允许这样做。

请帮我解决这个疑问：

DECLARE @TYPENAME varchar(20) = 'Hardness';
DECLARE @MODEL varchar(20) = 'LEEB';
DECLARE @SPECIFICATION varchar(20) = 'Other';
DECLARE @EQUIPMENT varchar(20) = 'Phase II Model: PHT-18 00 S/N: PHO109112815';

BEGIN

SELECT 
    Document.TypeName
    ,Document.CreatedDateTime
    ,QuestionType.SequenceNumber
    ,QuestionType.ValueType
    ,QuestionType.NAME
    ,Answer.ValueAsString
    ,Answer.ValueAsNumber
    ,Answer.ValueAsDateTime
    ,Person.FamilyName
    ,Person.GivenName
    ,QuestionType.AnswerType
    ,Media.Media
FROM 
    Document (NOLOCK)
INNER JOIN 
    DocumentType (NOLOCK) ON Document.DocumentTypeGuid = DocumentType.Guid
INNER JOIN 
    Answer (NOLOCK) ON Document.Guid = Answer.ParentDocumentGuid
INNER JOIN 
    QuestionType (NOLOCK) ON Answer.QuestionTypeGuid = QuestionType.Guid
LEFT JOIN 
    Media (NOLOCK) on Media.ParentGuid = Answer.Guid
LEFT JOIN 
    Person (NOLOCK) ON Document.CreatedBySystemUserGuid = Person.Guid
WHERE
    DocumentType.BonIdentifier = @TYPENAME 
    AND Document.Guid IN (CASE  
                             WHEN @TYPENAME = 'Hardness'
                                THEN (SELECT hrd.[DocumentGuid] 
                                      FROM [dbo].[Hardness] hrd
                                      WHERE (@MODEL IS NULL OR REPLACE(LOWER(hrd.[HardnessType]),' ','') LIKE '%'+REPLACE(LOWER(@MODEL),' ','')+'%')
                                        AND (@SPECIFICATION IS NULL OR (REPLACE(LOWER(hrd.[RockwellTestMethod]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[LEEBTestMethod]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[TelebrinellerTestMethod]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
   ))
   AND (@EQUIPMENT IS NULL OR (REPLACE(LOWER(hrd.[RockwellEquipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[LEEBEquipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[TelebrinellerEquipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
   ))
  )
 ELSE 
  (
     SELECT mh.[DocumentGuid] from [dbo].[MicroHardness] mh
     WHERE
     (@MODEL IS NULL OR REPLACE(LOWER(mh.[HardnessType]),' ','') LIKE '%'+REPLACE(LOWER(@MODEL),' ','')+'%')
     AND (@SPECIFICATION IS NULL OR (REPLACE(LOWER(mh.[WT Test Method]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
     OR  REPLACE(LOWER(mh.[BM Test Method]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'     
     ))
     AND (@EQUIPMENT IS NULL OR (REPLACE(LOWER(mh.[WT Equipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
     OR  REPLACE(LOWER(mh.[BM Equipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'     
     ))
  )
END
)
    AND QuestionType.AnswerType NOT IN ('Single Pick List', 'Multi-Pick List')
    AND QuestionType.AnswerType <> 'Summary'
    AND QuestionType.AnswerType <> 'Informational'
    AND Document.Active = 1
ORDER BY 
    Document.CreatedDateTime, QuestionType.SequenceNumber;

END

Answer 1

我很确定@TimBiegeleisen是正确的，但只是没有解释那么好。我认为这里的问题是使用case。我只使用case：

而不是or

（注意：由于父项重点错位，您可能会收到语法错误，其中有很多我丢失了）

SELECT 
    Document.TypeName
    ,Document.CreatedDateTime
    ,QuestionType.SequenceNumber
    ,QuestionType.ValueType
    ,QuestionType.NAME
    ,Answer.ValueAsString
    ,Answer.ValueAsNumber
    ,Answer.ValueAsDateTime
    ,Person.FamilyName
    ,Person.GivenName
    ,QuestionType.AnswerType
    ,Media.Media
FROM 
    Document (NOLOCK)
INNER JOIN 
    DocumentType (NOLOCK) ON Document.DocumentTypeGuid = DocumentType.Guid
INNER JOIN 
    Answer (NOLOCK) ON Document.Guid = Answer.ParentDocumentGuid
INNER JOIN 
    QuestionType (NOLOCK) ON Answer.QuestionTypeGuid = QuestionType.Guid
LEFT JOIN 
    Media (NOLOCK) on Media.ParentGuid = Answer.Guid
LEFT JOIN 
    Person (NOLOCK) ON Document.CreatedBySystemUserGuid = Person.Guid
WHERE
    DocumentType.BonIdentifier = @TYPENAME 
    AND 
    (
    ( 
        @TYPENAME = 'Hardness'
        AND Document.Guid IN ((SELECT hrd.[DocumentGuid] 
                                      FROM [dbo].[Hardness] hrd
                                      WHERE (@MODEL IS NULL OR REPLACE(LOWER(hrd.[HardnessType]),' ','') LIKE '%'+REPLACE(LOWER(@MODEL),' ','')+'%')
                                        AND (@SPECIFICATION IS NULL OR (REPLACE(LOWER(hrd.[RockwellTestMethod]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[LEEBTestMethod]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[TelebrinellerTestMethod]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
   ))
   AND (@EQUIPMENT IS NULL OR (REPLACE(LOWER(hrd.[RockwellEquipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[LEEBEquipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[TelebrinellerEquipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
   ))
  )
   OR 
  (
      @TYPENAME <> 'Hardness'
      AND

  (
     SELECT mh.[DocumentGuid] from [dbo].[MicroHardness] mh
     WHERE
     (@MODEL IS NULL OR REPLACE(LOWER(mh.[HardnessType]),' ','') LIKE '%'+REPLACE(LOWER(@MODEL),' ','')+'%')
     AND (@SPECIFICATION IS NULL OR (REPLACE(LOWER(mh.[WT Test Method]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
     OR  REPLACE(LOWER(mh.[BM Test Method]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'     
     ))
     AND (@EQUIPMENT IS NULL OR (REPLACE(LOWER(mh.[WT Equipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
     OR  REPLACE(LOWER(mh.[BM Equipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'     
     ))
  )

)
    AND QuestionType.AnswerType NOT IN ('Single Pick List', 'Multi-Pick List')
    AND QuestionType.AnswerType <> 'Summary'
    AND QuestionType.AnswerType <> 'Informational'
    AND Document.Active = 1
ORDER BY 
    Document.CreatedDateTime, QuestionType.SequenceNumber;

Answer 2

您的查询工作正常@Zohar Peled但它降低了性能，因此我自己找到了解决方案，通过下面的条件查找将整个查询分开，

DECLARE @TYPENAME varchar(20) = 'MicroHardness';
DECLARE @MODEL varchar(20) = 'Wilson Tukon';
DECLARE @SPECIFICATION varchar(20) = 'ASTME 384';
DECLARE @EQUIPMENT varchar(20) = '300 BM/DF, S/N: 83180-483';

BEGIN

IF(@TYPENAME = 'Hardness')

SELECT 
    Document.Guid,
    Document.TypeName
    ,Document.CreatedDateTime
    ,QuestionType.SequenceNumber
    ,QuestionType.ValueType
    ,QuestionType.NAME
    ,Answer.ValueAsString
    ,Answer.ValueAsNumber
    ,Answer.ValueAsDateTime
    ,Person.FamilyName
    ,Person.GivenName
    ,QuestionType.AnswerType
    ,Media.Media
FROM Document (NOLOCK)
INNER JOIN DocumentType (NOLOCK) ON Document.DocumentTypeGuid = DocumentType.Guid
INNER JOIN Answer (NOLOCK) ON Document.Guid = Answer.ParentDocumentGuid
INNER JOIN QuestionType (NOLOCK) ON Answer.QuestionTypeGuid = QuestionType.Guid
LEFT JOIN Media (NOLOCK) on Media.ParentGuid = Answer.Guid
LEFT JOIN Person (NOLOCK) ON Document.CreatedBySystemUserGuid = Person.Guid
WHERE
DocumentType.BonIdentifier = @TYPENAME AND Document.Guid in
(
   SELECT hrd.[DocumentGuid] from [dbo].[Hardness] hrd
   WHERE
   (@MODEL IS NULL OR REPLACE(LOWER(hrd.[HardnessType]),' ','') LIKE '%'+REPLACE(LOWER(@MODEL),' ','')+'%')
   AND (@SPECIFICATION IS NULL OR (REPLACE(LOWER(hrd.[RockwellTestMethod]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[LEEBTestMethod]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[TelebrinellerTestMethod]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
   ))
   AND (@EQUIPMENT IS NULL OR (REPLACE(LOWER(hrd.[RockwellEquipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[LEEBEquipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
   OR  REPLACE(LOWER(hrd.[TelebrinellerEquipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
   ))
)
AND QuestionType.AnswerType not in ('Single Pick List', 'Multi-Pick List')
AND QuestionType.AnswerType <> 'Summary'
AND QuestionType.AnswerType <> 'Informational'
AND Document.Active = 1
ORDER BY Document.CreatedDateTime, QuestionType.SequenceNumber;

ELSE IF(@TYPENAME = 'MicroHardness')

SELECT 
    Document.Guid,
    Document.TypeName
    ,Document.CreatedDateTime
    ,QuestionType.SequenceNumber
    ,QuestionType.ValueType
    ,QuestionType.NAME
    ,Answer.ValueAsString
    ,Answer.ValueAsNumber
    ,Answer.ValueAsDateTime
    ,Person.FamilyName
    ,Person.GivenName
    ,QuestionType.AnswerType
    ,Media.Media
FROM Document (NOLOCK)
INNER JOIN DocumentType (NOLOCK) ON Document.DocumentTypeGuid = DocumentType.Guid
INNER JOIN Answer (NOLOCK) ON Document.Guid = Answer.ParentDocumentGuid
INNER JOIN QuestionType (NOLOCK) ON Answer.QuestionTypeGuid = QuestionType.Guid
LEFT JOIN Media (NOLOCK) on Media.ParentGuid = Answer.Guid
LEFT JOIN Person (NOLOCK) ON Document.CreatedBySystemUserGuid = Person.Guid
WHERE
DocumentType.BonIdentifier = @TYPENAME AND Document.Guid in
(
   SELECT mh.[DocumentGuid] from [dbo].[MicroHardness] mh
     WHERE
     (@MODEL IS NULL OR REPLACE(LOWER(mh.[HardnessType]),' ','') LIKE '%'+REPLACE(LOWER(@MODEL),' ','')+'%')
     AND (@SPECIFICATION IS NULL OR (REPLACE(LOWER(mh.[WT Test Method]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'
     OR  REPLACE(LOWER(mh.[BM Test Method]),' ','') LIKE '%'+REPLACE(LOWER(@SPECIFICATION),' ','')+'%'     
     ))
     AND (@EQUIPMENT IS NULL OR (REPLACE(LOWER(mh.[WT Equipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'
     OR  REPLACE(LOWER(mh.[BM Equipment]),' ','') LIKE '%'+REPLACE(LOWER(@EQUIPMENT),' ','')+'%'     
     ))
)
AND QuestionType.AnswerType not in ('Single Pick List', 'Multi-Pick List')
AND QuestionType.AnswerType <> 'Summary'
AND QuestionType.AnswerType <> 'Informational'
AND Document.Active = 1
ORDER BY Document.CreatedDateTime, QuestionType.SequenceNumber;

END

子查询返回多个值，不允许变量=，！=，＆lt;，＆lt; =，＆gt;，＆gt; =

2 个答案: