SQLSTATE[HY000]: General error: 1366 Incorrect integer value: - mysql

Question

$order = new Application_Model_DbTable_Order();
$orderno = $order->select()
->from($order, 'orderno')
->where('memberid = ?', $userid)
->order('orderno DESC')
->limit(1, 0);
SQLSTATE[HY000]: General error: 1366 Incorrect integer value: 'SELECT ordertable.orderno FROM ordertable WHERE (memberid = '30') ORDER BY orderno DESC LIMIT 1' for column 'orderno' at row 1
Got this error and am wondering if there is anything wrong with my code, because I have searched everywhere for the cause but don't seem to find any help.
#SQL code for Ordertable#
`orderno` int(5) NOT NULL AUTO_INCREMENT,
`memberid` int(5) DEFAULT NULL,
PRIMARY KEY (`orderno`)
#SQL code for Item#
`itemid` int(5) NOT NULL AUTO_INCREMENT,
`image` varchar(100) NOT NULL,
`itemname` varchar(30) DEFAULT NULL,
`description` varchar(100) DEFAULT NULL,
`itemtype` varchar(20) DEFAULT NULL,
PRIMARY KEY (`itemid`)
#SQL code for Orderdetail#
`orderdetailno` int(5) NOT NULL AUTO_INCREMENT,
`orderno` int(5) NOT NULL,
`itemid` int(5) NOT NULL,
`unitcost` decimal(6,2) DEFAULT NULL,
PRIMARY KEY (`orderdetailno`),
KEY `orderno` (`orderno`),
KEY `itemid` (`itemid`)
This is my sql code if it helps I'm using MySQL.
$request = new Zend_Session_Namespace('cart');
$auth = Zend_Auth::getInstance();
$user = $auth->getIdentity();
$userid = $user->userid;
$order = new Application_Model_DbTable_Order();
$itemdb = new Application_Model_DbTable_Item();
$orderdetail = new Application_Model_DbTable_Orderdetail();
$data = array ('memberid' => $userid);
$order->insert($data);
$orderno = $order->select()
->from($order, 'orderno')
->where('memberid = ?', $userid)
->order('orderno DESC')
->limit(1, 0);
foreach ($request->array as $var)
{
$unitprice = $itemdb->select()
->from('$itemdb', 'unitcost')
->where('itemid = ?', $var);
$newArray = array('orderno' => $orderno,
'itemid' => $var,
'unitcost' => $unitprice, );
$orderdetail->insert($newArray);
}
Any guidance will be very much appreciated.

Answer 1

Per https://stackoverflow.com/a/8882396/1432614, run
SELECT ##GLOBAL.sql_mode;
SELECT ##SESSION.sql_mode;
and if either include STRICT_TRANS_TABLES, remove it from the setting.
For example:
SET ##GLOBAL.sql_mode= 'NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';

Answer 2

The reason you are getting that error is because you are attempting to use a Zend_Db_Select object as a value in your INSERT statement.
$orderno = $order->select()
->from($order, 'orderno')
->where('memberid = ?', $userid)
->order('orderno DESC')
->limit(1, 0);
And then inside the foreach loop:
$newArray = array('orderno' => $orderno, // <-- this becomes a SELECT statment
'itemid' => $var,
'unitcost' => $unitprice, );
$orderdetail->insert($newArray); // attempting to insert a select statement
You should execute the $orderno statement and fetch() the result if you want to use it in an insert statement:
$ordernum = $orderno->query()->fetch();
$newArray = array('orderno' => $ordernum,
'itemid' => $var,
'unitcost' => $unitprice, );
$orderDetail->insert($newArray);