How to fetch data between two dates from sqlite db in QT creator

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I have problem while fetching data from sqlitedb.I need to fetch data between two dates.But I am not getting data.

query.prepare("SELECT PassID,STARTDATE,ENDDATE,INTIME,OUTTIME FROM ISSUEPASS WHERE STARTDATE BETWEEN ? AND ?");
query.addBindValue(date2);
query.addBindValue(date3);

Here date2 , date3 and STARTDATE are QDate objects

while(query.next)
{
qDebug() << query.value(0).toString().toAscii().data();
qDebug() << query.value(1).toString().toAscii().data();
qDebug() << query.value(2).toString().toAscii().data();
qDebug() << query.value(3).toString().toAscii().data();
qDebug() << query.value(4).toString().toAscii().data();
}

Here nothing is printed,Can you please provide the solution.

What I have tried:

query.prepare("SELECT PassID,STARTDATE,ENDDATE,INTIME,OUTTIME FROM ISSUEPASS WHERE STARTDATE BETWEEN ? AND ?");
query.addBindValue(date2);
query.addBindValue(date3);

while(query.next)
{
qDebug() << query.value(0).toString().toAscii().data();
qDebug() << query.value(1).toString().toAscii().data();
qDebug() << query.value(2).toString().toAscii().data();
qDebug() << query.value(3).toString().toAscii().data();
qDebug() << query.value(4).toString().toAscii().data();
}

Posted 3-Apr-18 18:28pm

Member 13740197

Updated 3-Apr-18 22:11pm

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Jochen Arndt · Accepted Answer · 2018-04-03T22:12:00

SQLite handles datetimes in a different way than other databases. It does not have specific storage classes but stores them as TEXT, REAL, or INTEGER (see Datatypes In SQLite Version 3[^]).

You have to pass the data acording to the used storage class and/or use one of the SQLite Query Language: Date And Time Functions[^].

Untested example:

C++

query.prepare("SELECT PassID,STARTDATE,ENDDATE,INTIME,OUTTIME FROM ISSUEPASS WHERE date(STARTDATE) BETWEEN ? AND ?");
query.addBindValue(date2.toString(Qt::ISODate));
query.addBindValue(date3.toString(Qt::ISODate));