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我编写了以下查询以从不同的数据库中提取数据。我创建了两个临时表来从两个不同的数据库中提取数据，最后从原始数据库中创建一个 select 语句来连接所有表。我的查询正在执行，但没有得到任何数据。（报告为空白）。我尝试分别执行两个临时表。它给出了正确的数据。但是当我执行整个查询时，结果是空白的。下面是查询。请帮忙。

"set fmtonly off

use GODSDB

IF object_id('tempdb..#CISIS_Call_Log') IS NOT NULL DROP TABLE #CISIS_Call_Log
select * 
into #CISIS_Call_Log
from OPENQUERY (CSISDB,
'select
ccl.ContractOID,
ccl.db_insertdate,
ccl.ContractCallLogStatusIdentifier,
ccl.db_UpdateDate,
ccp.ContractCallLogPurposeOID,
ccp.ContractCallLogPurposeIdentifier,
ccp.Description
from csisdb.dbo.ContractCallLog CCL
inner join csisdb.dbo.ContractCallLogPurpose CCP on ccl.ContractCallLogPurposeIdentifier = ccp.ContractCallLogPurposeIdentifier
where JurisdictionShortIdentifier = ''ON'' 
AND  ContractCallLogStatusIdentifier IN (''DNR'', ''NR'')
')

IF object_id('tempdb..#CMS_Campaign') IS NOT NULL DROP TABLE #CMS_Campaign
select * 
into #CMS_Campaign
from OPENQUERY (BA_GBASSTOCMS, '
Select
SystemSourceIdentifier,
ContractOID,
OfferSentDate,
CampaignOfferTypeIdentifier,
CampaignContractStatusIdentifier,
CampaignContractStatusUpdateDate,
DeclineDate,
CampaignOfferOID,
CampaignOID,
CampaignStartDate,
CampaignEndDate,
Jurisdiction,
CampaignDescription
from CMS.dbo.vw_CampaignInfo
where Jurisdiction = ''ON''
and CampaignOfferTypeIdentifier = ''REN''
')

select mp.CommodityTypeIdentifier as Commodity
,c.RtlrContractIdentifier as ContractID
,cs.ContractStatusIdentifier as ContractStatus
,c.SigningDate
,cf.StartDate as FlowStartDate
,cf.EndDate as FlowEndDate
,datediff(day, getdate(), c.RenewalDate) as RemainingDays
,c.RenewalDate
,l.ContractCallLogStatusIdentifier as CallLogType
,Substring (l.Description, 1, 20) as CallPurpose
,l.db_insertDate as CallLogDate
,cms.CampaignOfferOID as OfferID
,cms.CampaignContractStatusIdentifier as OfferStatus
,cms.CampaignContractStatusUpdateDate as StatusChangeDate
,cms.DeclineDate
from Contract c
inner join contractstate cs on cs.contractoid = c.ContractOID
and cs.ContractStatusIdentifier in ('ERA', 'FLW')
and datediff(day, getdate(), c.RenewalDate) > 60
inner join SiteIdentification si on si.SiteOID = c.SiteOID
inner join MarketParticipant mp on mp.MarketParticipantOID = si.MarketParticipantOID
inner join Market m on m.MarketOID = mp.MarketOID
inner join Jurisdiction j on j.JurisdictionOID = m.JurisdictionOID
and j.CountryCode = 'CA'
and j.ProvinceOrStateCode = 'ON'
inner join ContractFlow cf on cf.ContractOID = c.ContractOID
inner join #CISIS_Call_Log l on convert(varchar(15), l.ContractOID) = c.RtlrContractIdentifier
inner join #CMS_Campaign cms on convert(varchar(15), cms.ContractOID) = c.RtlrContractIdentifier


set fmtonly on"
4

1 回答 1

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如果每个临时表中的数据都经过验证，则：

尝试使用更小、更简单的查询来测试您的临时表。也可以尝试使用左连接，例如：

select
      c.RtlrContractIdentifier as ContractID
    , c.SigningDate
    , datediff(day, getdate(), c.RenewalDate) as RemainingDays
    , c.RenewalDate
    , l.ContractCallLogStatusIdentifier as CallLogType
    , Substring (l.Description, 1, 20) as CallPurpose
    , l.db_insertDate as CallLogDate
    , cms.CampaignOfferOID as OfferID
    , cms.CampaignContractStatusIdentifier as OfferStatus
    , cms.CampaignContractStatusUpdateDate as StatusChangeDate
    , cms.DeclineDate
from Contract c
LEFT join #CISIS_Call_Log l on convert(varchar(15), l.ContractOID) = c.RtlrContractIdentifier
LEFT join #CMS_Campaign cms on convert(varchar(15), cms.ContractOID) = c.RtlrContractIdentifier

这会返回数据吗？它是否从两个连接表中返回数据？

如果两个临时表都没有返回数据，则需要更改这些连接条件。

如果两个临时表都从该查询返回数据，则尝试 INNER 联接。如果这仍然有效，则添加更多连接（一次一个），直到您确定导致整体故障的连接。

如果没有每个表的数据，我们就无法确定 NULL 结果的确切原因。只有您可以，因此您需要一次解决问题。

于 2017-12-07T06:21:58.650 回答