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#include <QSqlDatabase>
#include <QSqlQuery>
#include <QSqlDriver>
#include <QSqlResult>
#include <QVariant>
#include <QDebug>

void testProc()
{
//! [2]
QSqlQuery q;
q.exec("call qtestproc (@outval1, @outval2)");
q.exec("select @outval1, @outval2");
q.next();
qDebug() << q.value(0) << q.value(1); // outputs "42" and "43"
//! [2]
}

void callStoredProc()
{
//! [10]
// STORED_PROC uses the return statement or returns multiple result sets
QSqlQuery query;
query.setForwardOnly(true);
query.exec("{call STORED_PROC}");
//! [10]
}

void setHost()
{
//! [24]
QSqlDatabase db;
db.setHostName("MyServer");
db.setDatabaseName("C:\\test.gdb");
//! [24]


//! [25]
// connect to database using the Latin-1 character set
db.setConnectOptions("ISC_DPB_LC_CTYPE=Latin1");
db.open();
//! [25]
}

void exProc()
{
//! [26]
QSqlQuery q;
q.exec("execute procedure my_procedure");
q.next();
qDebug() << q.value(0); // outputs the first RETURN/OUT value
//! [26]

qDebug( \
//! [31]
"QSqlDatabase: QMYSQL driver not loaded \
QSqlDatabase: available drivers: QMYSQL" \
//! [31]
);

/* Commented because the following line is not compilable
//! [34]
column.contains(QRegularExpression("pattern"));
//! [34]
*/
}



void updTable2()
{
QSqlDatabase db;
//! [37]
int value;
QSqlQuery query1;
query1.setForwardOnly(true);
query1.exec("select * FROM table1");
while (query1.next()) {
    value = query1.value(0).toInt();
    if (value == 1) {
        QSqlQuery query2;
        query2.exec("update table2 set col=2");  // WRONG: This will discard all results of
    }                                            // query1, and cause the loop to quit
}
//! [37]
}


void setConnString()
{
//! [39]
QSqlDatabase db = QSqlDatabase::addDatabase("QODBC3");
QString connectString = QStringLiteral(
    "DRIVER=/path/to/installation/libodbcHDB.so;"
    "SERVERNODE=hostname:port;"
    "UID=USER;"
    "PWD=PASSWORD;"
    "SCROLLABLERESULT=true");
db.setDatabaseName(connectString);
//! [39]
}