当HR.EMPID未找到

sql
oracle

2013-07-26 26 views 1 likes

我的代码似乎忽略了我无法找到HR.NAME的条目。如何在“SENT BY”字段中找到“Not Found”？另外，如果它没有找到HR.NAME，请包含该数据。当HR.EMPID未找到

SELECT DISTINCT MA.MOPID "MOP #" 
    ,MA.MOPNOTIFICATIONSENT "Sent Status" 
    ,MA.MOPNOTIFICATIONSENTBY "Employee ID" 
    ,MA.MOPNOTIFICATIONSENDAT "Date Sent" 
    ,HR.NAME "SENT BY" 

FROM MOPUSER.MOPACTIVITY MA ,[email protected] HR 
WHERE TO_CHAR(MOPNOTIFICATIONSENDAT, 'YYYY-MM-DD') BETWEEN TO_CHAR(SYSDATE, 'YYYY-MM-DD') AND TO_CHAR(SYSDATE, 'YYYY-MM-DD') 
AND HR.EMPID = SUBSTR(MA.MOPNOTIFICATIONSENTBY, 2, (LENGTH(MA.MOPNOTIFICATIONSENTBY) - 1))

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2013-07-26 Jonathan Morningstar

我注意到，您可以访问使用DBLINK的第一个字段是'HR.Name'所以我的猜测是，无论是场犯规与形同虚设。或者你没有访问权限。你可以访问'HR @ SECADMIN'中的字段吗？ –

回答

尝试使用COALESCE功能与left join

SELECT DISTINCT MA.MOPID "MOP #" 
    ,MA.MOPNOTIFICATIONSENT "Sent Status" 
    ,MA.MOPNOTIFICATIONSENTBY "Employee ID" 
    ,MA.MOPNOTIFICATIONSENDAT "Date Sent" 
    ,COALESCE(HR.NAME,'Not found') as "SENT BY" 

FROM MOPUSER.MOPACTIVITY MA 
left join [email protected] HR on HR.EMPID = SUBSTR(MA.MOPNOTIFICATIONSENTBY, 2, (LENGTH(MA.MOPNOTIFICATIONSENTBY) - 1)) 
WHERE TO_CHAR(MOPNOTIFICATIONSENDAT, 'YYYY-MM-DD') BETWEEN TO_CHAR(SYSDATE, 'YYYY-MM-DD') AND TO_CHAR(SYSDATE, 'YYYY-MM-DD')

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2013-07-26 20:22:13 Parado

当HR.EMPID未找到

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