I use this technique for QoQ when I have a commond key:
Now, I have data from two different table but the join is based on multiple fields as:
from tableA, tableB
where tableA.field1 = tableB.field1
and tableA.field2 = tableB.field2
and tableA.field3 = tableB.field3
How can I do the other join in this case?
Thanks in advanced.
You could use exactly the same strategy as in the reference you gave, then perhaps make it more the result more efficient.
<cfquery name="joinQuery" dbtype="query" >
WHERE QueryB.field1 IS NULL OR QueryB.field2 IS NULL OR QueryB.field3 IS NULL
<cfset QueryAddRow(joinQuery) />
<cfquery name="result" dbtype="query" >
FROM QueryA, QueryB
WHERE QueryA.field1 = QueryB.field1
AND QueryA.field2 = QueryB.field2
AND QueryA.field3 = QueryB.field3
SELECT QueryA.*, joinQuery.*
FROM QueryA, joinQuery
WHERE QueryA.field1 NOT IN (#ValueList(QueryB.field1)#) AND QueryA.field2 NOT IN (#ValueList(QueryB.field2)#) AND QueryA.field3 NOT IN (#ValueList(QueryB.field3)#)