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Invalid Use of Null after editing query SQL

Whenever I resort to editing or even just viewing a query in SQL I can no longer open the query. I will get an error message 'Invalid Use of Null'. There are no null values in the dataset. The query will work OK until such time as I look at the SQL. Once I have done that I cannot open the query in any way, not even in Design View. It will always return the same error. Yet I can export the query and see the recordset returned in, for example, Excel.
What can be causing this problem?
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SpaceManagers
Asked:
SpaceManagers
3 Solutions
 
Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
Could be due to formatting of the SQL in the SQL View editor. If that editor splits a line at the wrong place, then Access could misinterpret that as a NULL value (or a malformed SQL, or any number of things). Generally Access will highlight the troublesome area in the SQL Viewer - can you determine where this is occurring?
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SpaceManagersAuthor Commented:
I have captured the sql by importing the query into another empty database. I then mirrored the sql in a new view in the original database. I was able to see the recordset in the new view and return to the Design View. I then looked at the SQL, copied the SQL , created a new query and inserted the SQL. This latest query will show the recordset but when I try to see it in Design View it will give me the Invalid Use of NULL error and when I click OK it returns me to the sql. I can still see the recordset but not the design view.
save the queries and close the database.
Reopen the database and now the newly created query, whence I copied the SQL, no longer  works.I get the error message Invalid use of Null. This is the query that i created from scratch, mirroring the sql of the earlier query. I then viewed and copied, without changing in any way, the SQL. Now after closign the db it fails.
I have tried to repair the database but it has no effect
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Rey Obrero (Capricorn1)Commented:
post the sql statement..

are you using subqueries?
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SpaceManagersAuthor Commented:
Yes, it does use subqueries and a quick check on a single table works without fault, ie I cannot replicate the problem

SELECT qrySpaces_GSD.SpaceCode, qrySpaces_GSD.SpaceStandardCode, qrySpaces_RAD.rm_std, qrySpaces_GSD.SpaceStandardName, qrySpaces_RAD.RAD_rmstd.description
FROM qrySpaces_GSD INNER JOIN qrySpaces_RAD ON qrySpaces_GSD.SpaceCode=qrySpaces_RAD.rm_id
WHERE (((qrySpaces_GSD.SpaceStandardCode) Not Like [qrySpaces_RAD]![rm_std]));

This SQL is Access generated from a qbe window
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SpaceManagersAuthor Commented:
I have just tried to Import spreadsheet data from Excel using the Access wizard.
When I have completed all the tasks and then click the Finish button I get the Invalid use of Null error message
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harfangCommented:
Using the bang as separator is not standard. The query analyser might mistake it for an object reference. The standard SQL notation would be:

... Not Like qrySpaces_RAD.rm_std
It's also unusual to apply the Like operator between two fields, and even more when the tables are already joined. Could you explain the purpose?

I have no idea if that is related to your problem, as I never had the “Invalid use of Null” error from the Jet Engine, and I'm not sure it even exists. It is however a standard error message for Visual Basic, and probably also for Visual Basic function calls from within a query. Do your queries use function calls?

(°v°)
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SpaceManagersAuthor Commented:
Problem is not resolved.
Divided points amongst experts who tried to help.
Thanks for your efforts
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