SQL update query for balances using Access raises 'Operation must use an updateable query' -


i have following query (ms access 2010) i'm trying use update table running balance: 

update accounts set a.currentbalance =  (select sum(iif(c.categoryid = 2,t.amount * -1, t.amount)) +          (select a1.openingbalance           accounts a1 a1.accountid = a.accountid) totalamount transactions t inner join (      transactiontypes tt inner join       categories c on c.categoryid = tt.categoryid)       on t.transactiontypeid = tt.transactiontypeid);

the tables used are:

a work around "query must use updateable query" use temporary table , update final target data based on aggregated data in temporary table. in case, mwolfe suggests, have aggregate function in inner select query. workaround provide quick fix situation, has me.

ref: http://support.microsoft.com/kb/328828

this article helped me understand specifics of situation , provided work around: http://www.fmsinc.com/microsoftaccess/query/non-updateable/index.html


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