大约有 40,000 项符合查询结果（耗时：0.0659秒） [XML]
Laravel Eloquent Sum of relation's column
...([
'activity AS paid_sum' => function ($query) {
$query->select(DB::raw("SUM(amount_total) as paidsum"))->where('status', 'paid');
}
]);
it returns
"paid_sum_count" => "320.00"
in Deals attribute.
This it now the sum which i wanted to get not the count.
...
PDO closing connection
...instance = null;
}
}
}
$req = PDO2::getInstance()->prepare('SELECT * FROM table');
$req->execute();
$count = $req->rowCount();
$results = $req->fetchAll(PDO::FETCH_ASSOC);
$req->closeCursor();
// Do other requests maybe
// And close connection
PDO2::closeInstance();
// pri...
Is optimisation level -O3 dangerous in g++?
...er versions of GCC have a profile-guided optimization mode that can (IIUC) selectively apply the -O3 optimizations to hot functions -- effectively automating this process.
share
|
improve this answ...
How can I listen for a click-and-hold in jQuery?
...
how to select the text with different color when we tap and hold on the device
– Lucky
Oct 22 '13 at 6:16
a...
How to pass prepareForSegue: an object
...ntifier:sender: method to activate the transition to a new view based on a selection or button press.
For instance, consider I had two view controllers. The first contains three buttons and the second needs to know which of those buttons has been pressed before the transition. You could wire t...
WPF and initial focus
...aversalRequest(FocusNavigationDirection.First));
This will automatically select the first control in the tab order, so it's a general solution that should be able to be dropped into any window and Just Work.
share
...
Does “display:none” prevent an image from loading?
...ning when the element is nested within a picture element, and the resource selection algorithm is different. As well, the picture element itself does not display anything; it merely provides a context for its contained img element that enables it to choose from multiple URLs.
So what it says is th...
Difference between $(document.body) and $('body')
...ctly to jQuery. Alternatively, when you pass the string 'body', the jQuery selector engine has to interpret the string to figure out what element(s) it refers to.
In practice either will get the job done.
If you are interested, there is more information in the documentation for the jQuery function...
Xcode 4.5 Storyboard 'Exit'
... for your unwind segue and then connect from an element to the exit button selecting the method you wish to call. You can find an example here (I have updated my answer as well to include the example)
– Alladinian
Oct 22 '12 at 8:18
...
What is an index in SQL?
...e file the value is stored.
In MySQL you can use EXPLAIN in front of your SELECT statement to see if your query will make use of any index. This is a good start for troubleshooting performance problems. Read more here:
http://dev.mysql.com/doc/refman/5.0/en/explain.html
...