query prepare with sql math

[spirit]

looks like bug in Qt.
this code works, you can use it

...
query.prepare(QString("select %1/%2").arg(ui.lineEdit->text()).arg(ui.lineEdit_2->text()));
...

...
query.prepare(QString("select %1/%2").arg(ui.lineEdit->text()).arg(ui.lineEdit_2->text()));
...

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