Shulou(Shulou.com)06/01 Report--

Premise:

Win xp environment; Qt SDK version v1.1.3; library file version 4.7.4

Database driver type: QODBC

I have encountered the warning as described in the title twice.

All work out on their own.

The situations and solutions are as follows:

For the first time, use the QSqlRelationalTableModel model. Set the first column of the database to QSqlRelation

Model- > setRelation (0, QSqlRelation ("name_of_sql", "id", "name"); / / warning

Then the alarm appears when editing the database with QSqlRelationalTableModel.

Solution:

Do not set the first column of the database to QSqlRelation

On another occasion, when you set up the database, set the second column to primary key

Then an alarm appears when editing the database.

Solution:

Set the first column to primary key

I don't quite understand the principle of this kind of problem, but it is solved by accident. Share it with everyone.

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