Gary Kjos
garykjos at gmail.com
Wed Jun 8 14:32:06 CDT 2011
I have had cases were I will use a group by query to make a temporary table and then use that temporary table to join to the table I need to update. GK On Wed, Jun 8, 2011 at 2:22 PM, William Benson (VBACreations.Com) <vbacreations at gmail.com> wrote: > 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] > > -- > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com > > > -- > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com > > > -- > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com > > > -- > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com > > > -- > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com > > > -- > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com > -- Gary Kjos garykjos at gmail.com