Databases :: SQL Joins - Getting Duplicate Contact ID
Jun 24, 2010
This query should not fetch duplicate contactID(i.e Same ContactID).but when i execute the query i get duplicated ContactID.I know it is a problem with Joins. Could anyone tell me what is wrong with my Query,
Here is my query
select ContactTracking.Contact_ID
FROM
ContactTracking ContactTracking
LEFT OUTER JOIN Issues Issues ON ContactTracking.Issue_ID = Issues.Issue_ID
LEFT OUTER JOIN HRA hra ON hra.HcnID = ContactTracking.HcnID
INNER JOIN HPS_COMMON.dbo.wrk_user wrk_User ON ContactTracking.UserID = wrk_User.id_User
INNER JOIN HPS_COMMON.dbo.def_Usertype def_Usertype ON wrk_User.id_UserType = def_Usertype.id_UserType
WHERE
ContactTracking.contact_date>'10-jan-2009'
AND ContactTracking.Call_end_time is not null
AND Contact_ID in ('122734','122738')
And here is the ContactId result i get,
122734
122734
122738
122738
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