以下查询不会返回0个升序文档的结果。它直接以1个文档的升序开头，但有3行有0个文档。
SELECT UPPER(HostApplicationLocalData.ParentID)as ParentID, COUNT(Document.ID) as Documentsfrom HostApplicationLocalData inner join Documenton HostApplicationLocalData.ID=Document.HostApplicationLocalData_ID WHEREHostApplicationLocalData.TransactionType_ID = 6AND Document.Removed=0 ANDHostApplicationLocalData.Company_ID = 9000 AND (SharePointURI is not null or ((SharePointURI is nulland Content_ID is not null ) or((HostApplicationLocalData_ID is not null andHostApplicationLocalData_ID != 0 and Content_ID isnull)))) AND HostApplicationLocalData.ParentIDIN('ACETRAVE0001 ','ADVANCED0001 ','ALLENSON0001 ','AMERICAN0001 ','ASSOCIAT0001 ','ATTRACTI00001 ','AUSTRALIA ','AUTOFINA0001 ','BEAUMONT0001 ','BERGERON0001 ','BLOOMING0001 ','BURNETTT0001 ','BUSINESS MAG ','BUSINESS0001 ','CAPITALP0001 ','CARLSONS0001 ','CENTRALC0001 ','CHICAGOC0001 ','CHICAGOR0001 ','CIRCUITD0001 ','COMNETEN0001 ','COMPUTER0001 ','COMVEXIN0001 ','CONSUMER MAG ','CONTINEN0001 ','COWLEYEN0008 ','CRUGEREN0001 ','DISTANTI0001 ','DOLECKIC0001 ','ELECTRO0001 ','ELECTRON0001 ','ELECTRON0003 ','FABRIKAM0001 ','GARDNERS0001 ','GKCLEANI0001 ','GREENLAK0001 ','GREENWOO0001 ','GUNTHARS0004 ','HARVEYEL0001 ','HILLSBRO0001 ','ILSTATE0001 ','IMAGEMAK0001 ','INLANDRE0001 ','INLINESE0001 ','INNERCIT0001 ','INSTATET0001 ','INTEGRAT0001 ','INTERNAL0001 ','INTERNAT0001 ','INTERNAT0002 ','') group byHostApplicationLocalData.ParentID order by Documents asc
答案 0 :(得分：0)
您正在使用内部联接，而不是左联接。然后，您将只获得至少包含1个文档的文档。要像所有这样使用LEFT JOIN：
SELECT UPPER(HostApplicationLocalData.ParentID) AS ParentID,
COUNT(Document.ID) AS Documents
FROM HostApplicationLocalData
LEFT JOIN Document ON HostApplicationLocalData.ID = Document.HostApplicationLocalData_ID
WHERE HostApplicationLocalData.TransactionType_ID = 6 AND
Document.Removed = 0 AND
HostApplicationLocalData.Company_ID = 9000 AND
(
SharePointURI IS NOT NULL OR
(
(
SharePointURI IS NULL AND
Content_ID IS NOT NULL
) OR
(
(HostApplicationLocalData_ID IS NOT NULL AND
HostApplicationLocalData_ID != 0 AND
Content_ID IS NULL)
)
)
) AND
HostApplicationLocalData.ParentID IN ( 'ACETRAVE0001 ',
'ADVANCED0001 ',
'ALLENSON0001 ',
'AMERICAN0001 ',
'ASSOCIAT0001 ',
'ATTRACTI00001 ',
'AUSTRALIA ',
'AUTOFINA0001 ',
'BEAUMONT0001 ',
'BERGERON0001 ',
'BLOOMING0001 ',
'BURNETTT0001 ',
'BUSINESS MAG ',
'BUSINESS0001 ',
'CAPITALP0001 ',
'CARLSONS0001 ',
'CENTRALC0001 ',
'CHICAGOC0001 ',
'CHICAGOR0001 ',
'CIRCUITD0001 ',
'COMNETEN0001 ',
'COMPUTER0001 ',
'COMVEXIN0001 ',
'CONSUMER MAG ',
'CONTINEN0001 ',
'COWLEYEN0008 ',
'CRUGEREN0001 ',
'DISTANTI0001 ',
'DOLECKIC0001 ',
'ELECTRO0001 ',
'ELECTRON0001 ',
'ELECTRON0003 ',
'FABRIKAM0001 ',
'GARDNERS0001 ',
'GKCLEANI0001 ',
'GREENLAK0001 ',
'GREENWOO0001 ',
'GUNTHARS0004 ',
'HARVEYEL0001 ',
'HILLSBRO0001 ',
'ILSTATE0001 ',
'IMAGEMAK0001 ',
'INLANDRE0001 ',
'INLINESE0001 ',
'INNERCIT0001 ',
'INSTATET0001 ',
'INTEGRAT0001 ',
'INTERNAL0001 ',
'INTERNAT0001 ',
'INTERNAT0002 ', '' )
GROUP BY HostApplicationLocalData.ParentID
ORDER BY Documents ASC;