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Thread: QSqlRelationalTableModel

  1. #1
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    Default QSqlRelationalTableModel

    is it posible to use QSqlRelationalTableModel to relate one column in source table to multiple columns in destination table? For instance, if inf first table you have:
    Qt Code:
    1. ID | NAME | AGE
    2. 1 | John | 10
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    and second:
    Qt Code:
    1. ID | MOTHER | FATHER
    2. 1 | Anne | Bob
    To copy to clipboard, switch view to plain text mode 

    to get the table:
    Qt Code:
    1. ID | NAME | AGE | MOTHER | FATHER
    2. 1 | John | 10 | Anne | Bob
    To copy to clipboard, switch view to plain text mode 

    model->setRelation replaces the column, while i'd like to add them.

  2. #2
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    Default Re: QSqlRelationalTableModel

    The first question is whether the design of your database is correct. You could safely merge those two tables into a single one. As for the relational table model, it can't do what you want. You could implement a proxy that would merge two tables or create a view in your database and use QSqlTableModel or use QSqlQueryModel to fetch both tables. Just remember the latter is read-only.

  3. The following user says thank you to wysota for this useful post:

    marvin (19th November 2008)

  4. #3
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    Default Re: QSqlRelationalTableModel

    Quote Originally Posted by wysota View Post
    The first question is whether the design of your database is correct. You could safely merge those two tables into a single one. As for the relational table model, it can't do what you want. You could implement a proxy that would merge two tables or create a view in your database and use QSqlTableModel or use QSqlQueryModel to fetch both tables. Just remember the latter is read-only.
    tnx, i can't merge the tables, those were just for example, but using QSqlQueryModel solved my problem

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