Tomasz
11th August 2010, 23:21
Hello!
I've wrote application with some functions which uses SQL database. I each function I open and read my database like this:
QSqlDatabase bdb = QSqlDatabase::addDatabase("QSQLITE");
bdb.setDatabaseName("/home/mydatabase.db");
ok = bdb.open();
if (ok)
{
out << endl << "OK!" << endl ;
} else {
out << "Error!" << endl;
}
QSqlQueryModel *queryModel = new QSqlQueryModel;
queryModel->setQuery("SELECT * FROM some_tab where some_field='something'", bdb);
QSqlRecord rec;
//some code...
bdb.close();
but I get warnings like this in my console:
QSqlDatabasePrivate::removeDatabase: connection 'qt_sql_default_connection' is still in use, all queries will cease to work.
QSqlDatabasePrivate::addDatabase: duplicate connection name 'qt_sql_default_connection', old connection removed.
Is it something wrong? Everything works fine, but maybe I should do it in other way?
thanks in advance
best regards
Tomasz
I've wrote application with some functions which uses SQL database. I each function I open and read my database like this:
QSqlDatabase bdb = QSqlDatabase::addDatabase("QSQLITE");
bdb.setDatabaseName("/home/mydatabase.db");
ok = bdb.open();
if (ok)
{
out << endl << "OK!" << endl ;
} else {
out << "Error!" << endl;
}
QSqlQueryModel *queryModel = new QSqlQueryModel;
queryModel->setQuery("SELECT * FROM some_tab where some_field='something'", bdb);
QSqlRecord rec;
//some code...
bdb.close();
but I get warnings like this in my console:
QSqlDatabasePrivate::removeDatabase: connection 'qt_sql_default_connection' is still in use, all queries will cease to work.
QSqlDatabasePrivate::addDatabase: duplicate connection name 'qt_sql_default_connection', old connection removed.
Is it something wrong? Everything works fine, but maybe I should do it in other way?
thanks in advance
best regards
Tomasz