ODBC plugin assumes table names to NOT contain unicode characters, which isn't always true (Excel sheets can have unicode names). Using QSqlDatabase::tables on such database connections returns wrong data. A simple fix would be to change

        QString fieldVal = qGetStringData(hStmt, 2, -1, false);

to:

        QString fieldVal = qGetStringData(hStmt, 2, -1, true);

in qsql_odbc.cpp - inside StringList QODBCDriver::tables(QSql::TableType type) const function. Don't know if it would affect anything else though.