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  1. #1
    Join Date
    Jan 2002
    Location
    London
    Posts
    73

    Unanswered: Joining MS Access and SQL Tables on null

    Hi,

    I am try to join 2 tables together.

    1 table is a SQL table and the other table is a MS Access Table.

    The problem i am having is on the sql table sometimes the field is either null or " " or "" so in my MS Access table i have tried joining when the field is null but does not bring out any results.

    I even created another query for the SQL table and trimmed the field then on another query tried joining but same problems.

    Does anyone know how to go about this.

    Thanks

  2. #2
    Join Date
    Jan 2007
    Location
    UK
    Posts
    11,434
    Provided Answers: 10
    You can't join on NULL fields because NULL != NULL.

    Think of NULL as "unknown" i.e. you can't know if two unknown values match!

    You really need to provide us with more detail (such as the table definitions, sample data and desired result) before we can help more.
    George
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