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  1. #1
    Comet2 is offline Novice
    Windows XP Access 2007
    Join Date
    Oct 2010

    combining tables that have no direct connection field

    I am a newbie and have hit the wall.

    Book1 table - fields id, Author, isdn, copyright, title....

    Availability table - fields sp_id, isdn10, list, new, used, ....

    isdn in Book1 table is a 13 character field, that needs to be MID to 9

    idsn10 in availability table is a 10 character field, that needs to be Right, 9

    The calculated 9 character field should match up but I have no idea how to make it happen. Help!

  2. #2
    ConneXionLost's Avatar
    ConneXionLost is offline Simulacrum
    Windows XP Access 2003
    Join Date
    Jan 2010
    Victoria, Canada
    Build one query from each table (include the respective calculated fields in the queries), then join the first two queries, on the calculated fields, in a third query.


  3. #3
    RuralGuy's Avatar
    RuralGuy is offline Administrator
    Windows 7 Access 2010 (version 14.0)
    Join Date
    Mar 2007
    8300' in the Colorado Rocky Mountains
    Can you add fields to the tables? If so then add one field to each table with the MID and RIGHT specs you stated. Then create the relationship with these new fields. If you can't modify the tables then create queries or each table that adds the field with the specs you need and you can join them in a third query.

  4. #4
    weekend00 is offline I may not be right
    Windows XP Access 2003
    Join Date
    Aug 2010
    Actually, Access can join on simple calculated field:

    tableA inner join tableB on mid(tableA.ISDN,1,)=right(tableB.ISDN10,9)

Please reply to this thread with any new information or opinions.

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