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Is there a way to access the “previous row” value in a SELECT statement?
...rder rows such that each one is distinct:
select rank() OVER (ORDER BY id) as 'Rank', value into temp1 from t
select t1.value - t2.value from temp1 t1, temp1 t2
where t1.Rank = t2.Rank - 1
drop table temp1
If you need to break ties, you can add as many columns as necessary to the ORDER BY.
...
How to use JNDI DataSource provided by Tomcat in Spring?
...etup details. Outside scope of original question/answer. Suggest posting a new question with details of what you have tried, specific versions, and any error messages. Example: stackoverflow.com/questions/10388137/…
– kaliatech
Sep 18 '15 at 13:12
...
Fragments within Fragments
...fragment from within an existing Fragment class:
Fragment videoFragment = new VideoPlayerFragment();
FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
transaction.add(R.id.video_fragment, videoFragment).commit();
To get more idea about nested fragments, please go thr...
How to print formatted BigDecimal values?
...or, say 123,456.78 you have to use DecimalFormat:
DecimalFormat df = new DecimalFormat("#,###.00");
System.out.println(df.format(new BigDecimal(123456.75)));
System.out.println(df.format(new BigDecimal(123456.00)));
System.out.println(df.format(new BigDecimal(123456123456.78)));...
Vagrant ssh authentication failure
....vagrant.d\insecure_private_key
Run vagrant up (vagrant will be generate a new insecure_private_key file)
In other cases, it is helpful to just set forward_agent in Vagrantfile:
Vagrant::Config.run do |config|
config.ssh.forward_agent = true
end
Useful:
Configurating git may be with git-scm...
Asynchronously load images with jQuery
...
No need for ajax. You can create a new image element, set its source attribute and place it somewhere in the document once it has finished loading:
var img = $("<img />").attr('src', 'http://somedomain.com/image.jpg')
.on('load', function() {
...
Django - Circular model import issue
... had single component app paths), so hopefully this will help other django newbies.
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Pure JavaScript Send POST Data Without a Form
...
You can send it and insert the data to the body:
var xhr = new XMLHttpRequest();
xhr.open("POST", yourUrl, true);
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.send(JSON.stringify({
value: value
}));
By the way, for get request:
var xhr = new XMLHttpRequest();
...
Flatten List in LINQ
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f1590723%2fflatten-list-in-linq%23new-answer', 'question_page');
}
);
P...
Strangest language feature
...ed is a syntax error due to the sneaky implicit semicolon insertion on the newline after return. The following works as you would expect though:
return {
id : 1234,
title : 'Tony the Pony'
};
Even worse, this one works as well (in Chrome, at least):
return /*
*/{
id : 1234,
title...