我如何在solr中使用内部加入
A.IotcelogCurrent作为a.iotcelogcurrent as a.iotcerogcurrent as a.iotdevicekind上的b.iotdevicekind = b.iotdevicekind =
精选A.IotdeviceKind,B。ResourcerisklevellowCount,B.Resourcerisklevelmiddlecount,B.R.Resourcerisklevelhighcount,来自Iotdevice的ResourceriskLevelHighCount,作为
b.iotdevicekind = b.iotdevicekind B. Resourcerisklevelmiddlecount,B。iotdevice的Resourcerisklevelhighcount作为内在的加入ResourscelogCurrent,如a.iotdevicekind上的B上的B. iotdevicekind = b.iotdevicekind,其中a.ResourceId ='airconditinal'
,但结果为null。 没有错误,但是结果始终为null, 我用户离开的地方加入了,没有错误。 请帮助我,我该如何在solr中使用内部加入?
SELECT A.ioTDeviceKind, B.resourceRiskLevelLowCount, B.resourceRiskLevelMiddleCount, B.resourceRiskLevelHighCount FROM ioTDevice AS A JOIN resourcelogCurrent AS B ON A.ioTDeviceKind = B.ioTDeviceKind WHERE A.resourceId = 'airconditinal'
or
SELECT A.ioTDeviceKind, B.resourceRiskLevelLowCount, B.resourceRiskLevelMiddleCount, B.resourceRiskLevelHighCount FROM ioTDevice AS A INNER JOIN resourcelogCurrent AS B ON A.ioTDeviceKind = B.ioTDeviceKind WHERE A.resourceId = 'airconditinal'
but the result is null.
there is no error, but the result always is null,
where i user left join, there is no error..
please help me , how can i use inner join in solr??
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