I use QSqlTableModel signed specified database table, setTable when Unable to find a table, but through the SQL statements can query to the forms, the code is
TableModel=new QSqlTableModel (0 db);
TableModel - & gt; SetTable (" 123.456 ");
TableModel - & gt; SetEditStrategy (QSqlTableModel: : OnManualSubmit);
TableModel - & gt; SetSort (0, Qt: : AscendingOrder);
TableModel - & gt; The select ();

Have anyone can guide it?