QtSql and Thread

[Ieshir]

Hello.
1)I have a class (doesn't work with gui), where I have slot for connect to the database(PSQL)

MyClass * cl = new MyClass;

MyClass * cl = new MyClass;

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2)next i create new thread

QThread * thread = new QThread;
myclass->moveToThread(thread);
thread->start();
..
emit connectToDB();
...

QThread * thread = new QThread;
myclass->moveToThread(thread);
thread->start();
..
emit connectToDB();
...

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3)next make query in gui-class or myclass;

QSqlQuery query;
query.prepare("text here");
query.exec(); //

QSqlQuery query;
query.prepare("text here");
query.exec(); //

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4)

Threads and the SQL Module

A connection can only be used from within the thread that created it. Moving connections between threads or creating queries from a different thread is not supported.

why query.exec() return true with correct data in gui-thread and another thread?