[AccessD] Operation must use an updatable query

OK, tried that on the latest query and no difference in the number of rows which got updated. I have given up trying to join on more than one table in a update query.

Thank you.

-----Original Message-----
From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Asger Blond
Sent: Wednesday, June 08, 2011 2:58 PM
To: 'Access Developers discussion and problem solving'
Subject: Re: [AccessD] Operation must use an updatable query

And one more suggestion: try to use UPDATE DISTINCTROW instead of just UPDATE.
Asger

-----Oprindelig meddelelse-----
Fra: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] På vegne af Asger Blond
Sendt: 8. juni 2011 20:32
Til: 'Access Developers discussion and problem solving'
Emne: Re: [AccessD] Operation must use an updatable query

Did you try to make the subquery a separate query and then join this to Tbl_Matched_Sites in the update query?
I vaguely remember a situation where I had an update query with a subquery which Access considered non updatable - and as far as I remember making the subquery a separate query got it to work.
Asger

-----Oprindelig meddelelse-----
Fra: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] På vegne af William Benson (VBACreations.Com)
Sendt: 8. juni 2011 19:43
Til: 'Access Developers discussion and problem solving'
Emne: [AccessD] Operation must use an updatable query

Ahh--- well, Asger, thank you for your correction - that was merely a typo (corrected below). 

Is it so that there is no way to improve syntax of a group by query being used to update records in a table without dealing with primary keys in both sources?

I have tried this many ways, eventually settling on First() thinking this would eliminate redundancies, which I thought might have been the issue.

Actually, there were far MORE redundant records when I was joining table to table instead of table to group-by-query. 






....
I am getting a message that "operation must use an updatable query" from attempting to run this SQL. The reason I decided to try to join on a query is that TblSites has tremendous duplication in it, and I would update based on the TblSites table and it would be reported that many times more rows in Tbl_Matched_Sites were about to be updated than in fact there even were in the table. So I thought I might be able to improve performance by changing the join to a group by query. Is there a way to get this to work?

UPDATE Tbl_Matched_Sites INNER JOIN 

(Select 
          First(SITE_DB) as FirstOfSITE_DB,
          FirstOf(Site_Station_Name) as FirstOf Site_Station_Name,
          First(Address_Line1) as FirstOfAddress_Line1,
          First(City) as FirstOfCity,
          First(State) as FirstOfState

>From 
          TblSites

Group By
          Site_Station_Name,
          Address_Line1,
          city,
          State  )

as   MainInfo  ON


Tbl_Matched_Sites.GIB_SITE_DB = MainInfo.FirstOfSITE_DB 

SET 

Tbl_Matched_Sites.GIB_Phys_Addr_1 = MainInfo.[ FirstOfAddress_Line1], Tbl_Matched_Sites.GIB_Phys_City = MainInfo.[ FirstOfCity], Tbl_Matched_Sites.GIB_Phys_State = MainInfo.[ FirstOfState]

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