Is it me, or do the Joins in Query a Query not work properly?
I'm trying to import data from a text file and put it into a SQL Server 7
database, but I only want records which aren't already there... simple
enough right?
I get the text file via a query;
<CFQuery datasource="TextImport" name="TextImport">
select Field1, Field2, Field3
from myFile.txt
</cfquery>
Then all of the data in the SQL table
<CFQuery datasource="SQLdata" name="SQLdata">
select Field1, Field2, Field3
from myTable
</cfquery>
Then I try the join
<cfquery dbtype="query" name="JoinQuery">
select TextImport.Field1 as Field1, TextImport.Field2 as Field2,
TextImport.Field3 as Field3
from TextImport left outer join SQLdata on TextImport.Field1=SQLdata.Field1
where TextImport.Field1 != SQLdata.Field1
</cfquery>
I know that Query a Query doesn't understand NULLs, so I'm assuming the
SQLdata.Field1 won't be NULL but will be empty
The problem is that it returns all records and not just the ones that are
missing
Anyone else have a similar problem and know the solution - I'm tearing what
little hair I have left out!
Philip Arnold
Director
Certified ColdFusion Developer
ASP Multimedia Limited
T: +44 (0)20 8680 1133
"Websites for the real world"
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