C++, Qt 4 Sqlite: can't create table

I'm trying to use sqlite as database for a symbian app but I can't create a table. Here's the code:

bool DatabaseManager::createExpenseTable(){

    if(QFile::exists(dbName)){
        this->showDebugMsg("Database file exist");
    }else{
        this-&g开发者_运维技巧t;showDebugMsg("Database file exist DOES NOT exist");
    }

    // Create table "person"
    bool ret = false;
    if (db.isOpen()){
        this->showDebugMsg("Database open");
        QSqlQuery query;
        ret = query.exec("create table expense "
                  "(id int primary key, "
                  "item varchar(100)");
                  //"price double, "
                  //"date datetime)");

    }else{
        this->showDebugMsg("Database CLOSED");
    }
    if(ret){
       this->showDebugMsg("Table created");
    }else{
        this->showDebugMsg("Table NOT created");

    }
    return ret;
    }

As far as I can see from the debug messages "Database file exist" and "Database open" the database exists and is open.

But I always get the "table NOT created" message. Does any of you see where the problem is?

There is a closing parenthesis missing in your query (you commented it out).

Wait, I found the problem. with this code:

this->showDebugMsg(query.lastError().text());

I saw that "the table expense already exist" and so, it doesn't create a new one. sorry for bothering you all.