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One to many relationship INNER JOIN condition
Message
 
À
14/02/2011 09:12:09
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:
01500076
Vues:
51
>I have a situation that I have been trying to resolve but was unable to up until now. I have a one to many relationships in a SQL where I need to use a condition on the INNER JOIN table. So, for example, the INNER JOIN table might have three records related to one record from the master table in the SQL. But, I need to assure to take only master records where all the INNER JOIN records for that table would satisfy a condition. What could be an example of such a query?

Could you post some example data and desired result?

I understand your question this way:
SELECT * 
    FROM MasterTable
INNER JOIN ChildTable ON MasterTable.PK = ChildTable.FK AND
                         ChildTable.SomeField1 = ????   AND
                         ChildTable.SomeField2 = ????
BTW this will give you the same results as:
SELECT * 
    FROM MasterTable
INNER JOIN ChildTable ON MasterTable.PK = ChildTable.FK
WHERE ChildTable.SomeField1 = ????   AND
      ChildTable.SomeField2 = ????
Only if you have LEFT/RIGHT join then it is important where you put the condition.
Against Stupidity the Gods themselves Contend in Vain - Johann Christoph Friedrich von Schiller
The only thing normal about database guys is their tables.
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