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Anonymous
Not applicable
5 years ago

Available value selection between 2 columns

I have 4 tables 

 

logins, ConnectedUsers,FacilityCode, ProviderCode.   

 

Basically in ConnectedUsers table i have: 

Provider_NameSystem_CodeFacility_CodeRegisteredUsers
AHSEGAYA 10
CCMSGAYAAA024
AHSEGAYA 6

logins

EventIDSystem_CodeFacility_Code
01GAYAAA02
02GAYA 

I have a measure that calculates logins based on event ID (count), however, I want the system to check if facility code in connectedusers table is blank then it should take system_code  registered users.

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