Oracle SQL:如何返回几个不同的列 [英] Oracle SQL: How return several distinct columns
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问题描述
我有一个输出的Oracle查询
I have an Oracle Query that outputs
但是我希望输出除事件ID(即
but I wish to output all distinct column except for Incident ID, i.e.
我尝试将GROUP BY添加到Oracle Query,但出现错误,
I tried adding GROUP BY to Oracle Query but get error,
DataSource.Error: Oracle: ORA-00979: not a GROUP BY expression
Details:
DataSourceKind=Oracle
DataSourcePath=dlporacle
Message=ORA-00979: not a GROUP BY expression
ErrorCode=-2147467259
以下是我的查询...请协助
Below is my Query ... please assist
SELECT
I.INCIDENTID AS "Incident ID",
I.CREATIONDATE AS "Creation Date",
MO.IPADDRESS AS "IP Address",
MO.DOMAINUSERNAME AS "Login ID",
MO.ENDPOINTMACHINENAME AS "Computer Name",
M.MESSAGESUBJECT AS "Email Subject"
FROM MESSAGE M,
JOIN INCIDENT I ON M.MESSAGEID = I.MESSAGEID AND M.MESSAGESOURCE = I.MESSAGESOURCE AND M.MESSAGEDATE = I.MESSAGEDATE
JOIN MESSAGEORIGINATOR MO ON M.MESSAGEORIGINATORID = MO.MESSAGEORIGINATORID
WHERE M.MESSAGESOURCE = 'ENDPOINT'
AND I.ISDELETED = 0
GROUP BY MO.IPADDRESS, MO.DOMAINUSERNAME, MO.ENDPOINTMACHINENAME, M.MESSAGESUBJECT
推荐答案
尝试一下
SELECT MIN(I.INCIDENTID) AS "Incident ID",
I.CREATIONDATE AS "Creation Date",
MO.IPADDRESS AS "IP Address",
MO.DOMAINUSERNAME AS "Login ID",
MO.ENDPOINTMACHINENAME AS "Computer Name",
M.MESSAGESUBJECT AS "Email Subject"
FROM MESSAGE M,
INCIDENT I,
MESSAGEORIGINATOR MO
WHERE M.MESSAGESOURCE = 'ENDPOINT'
AND M.MESSAGESOURCE = I.MESSAGESOURCE
AND M.MESSAGEID = I.MESSAGEID
AND M.MESSAGEDATE = I.MESSAGEDATE
AND M.MESSAGEORIGINATORID = MO.MESSAGEORIGINATORID
AND I.ISDELETED = 0
GROUP BY I.CREATIONDATE, MO.IPADDRESS, MO.DOMAINUSERNAME, MO.ENDPOINTMACHINENAME,M.MESSAGESUBJECT
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