|| Feedback | Linking Tables in Queries ||
Access doesn't offer an obvious way of including a grand total within a query and in most circumstances it is better to do this by displaying your data in a form or a report. There may however be a requirement to copy a set of records and include a total value as a final record.
The following example takes some booking records and adds a query total.
AddTotalToQuery : select query
|2449||CHELSFIELD GIRL GUIDES||10 Oct 05||10 Oct 05||£20.55|
|2450||CODELINK||08 Oct 05||09 Oct 05||£37.50|
|2451||GODDINGTON SCHOOL||26 Oct 05||26 Oct 05||£62.47|
|2452||HIGH FLYERS ATHLETICS||30 Oct 05||30 Oct 05||£22.65|
|2453||GODDINGTON SCHOOL||16 Nov 05||16 Nov 05||£27.30|
|2454||CHELSFIELD GIRL GUIDES||10 Nov 05||14 Nov 05||£135.85|
Would you like to learn more?
To achieve this it is necessary to create another table. Add a new table to your database, name it 'Temporary_Table' and give it a single numeric field called 'TempField1'. Add two records containing the values '1' and '2'.
Now build a new query containing both the main table of data (Bookings) and also the Temporary_Table. The tables cannot be linked. Select the query Totals option from the query design toolbar (or View | Totals).
AddTotalToQuery : Select Query (Design)
|Field:||NewBkgRef: IIf([tempf...||NewUserGrp: IIf([tempf...||Invoice_Amount||Booking_Ref|
|Total:||Group By||Group By||Sum||Where|
Apart from the Invoice_Amount, all of the fields need to be user-defined:
The two records in the unlinked Temporary_Table cause the query to run twice, but the Group By instruction ensures that the second time it is summarised to a single record.
If you need to add criteria to this type of query, it is best to put them in separate (possibly duplicate) fields using the 'Where' totalling option. Otherwise they can interfere with the sum total.
|file: accquerytotal.htm||Page last updated Oct 06||© MeadInKent.co.uk 2006|