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One to many relationship INNER JOIN condition
Message
 
 
À
14/02/2011 10:15:43
Information générale
Forum:
Microsoft SQL Server
Catégorie:
Syntaxe SQL
Versions des environnements
SQL Server:
SQL Server 2008
Application:
Web
Divers
Thread ID:
01500073
Message ID:
01500107
Vues:
44
>>If you want to make sure that all records are enabled, then
>>
>>select M.Numero
>>from Master M inner join ManyToManyTable MM on M.Numero = MM.NoMaster
>>inner join ChildTable C on MM.NoChildTable = C.Numero
>>group by M.Numero
>>having min(case when C.Enabled = 1 then 1 else 0 end) = 1 -- means all records are enabled
>>and sum(case when C.Enabled = 1 then 1 else 0 end) = count(C.Numero) -- total number of enabled records = total number of joined records
>
>Unfortunately, this does not work either.

What exactly is the requirement here? Can you post some input and a bit of output?

Do you want to only get Master.Numero if all Child records for that Numero (through ManyToManyTable) are Enabled?
If it's not broken, fix it until it is.


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