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what is the difference between GROUP BY and ORDER BY in sql
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ORDER BY alters the order in which items are returned.
GROUP BY will aggregate records by the specified columns which allows you to perform aggregation functions on non-grouped columns (such as SUM, COUNT, AVG, etc).
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Link to add to Google calendar
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ORDER BY the IN value list
...s c
join (
values
(1,1),
(3,2),
(2,3),
(4,4)
) as x (id, ordering) on c.id = x.id
order by x.ordering
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Items in JSON object are out of order using “json.dumps”?
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Both Python dict (before Python 3.7) and JSON object are unordered collections. You could pass sort_keys parameter, to sort the keys:
>>> import json
>>> json.dumps({'a': 1, 'b': 2})
'{"b": 2, "a": 1}'
>>> json.dumps({'a': 1, 'b': 2}, sort_keys=True)
'{"a"...
Using XPATH to search text containing
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Got to work this with PHP successfully as well: $col = $xpath->query("//p[text()=\"\xC2\xA0\"]");
– hakre
Jul 23 '11 at 17:37
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HTTP GET Request in Node.js Express
...rks on Node will serve you well if you need to use an HTTP client on Ruby, PHP, Java, Python, Objective C, .Net or Windows 8 as well. As far as I can tell the unirest libraries are mostly backed by existing HTTP clients (e.g. on Java, the Apache HTTP client, on Node, Mikeal's Request libary) - Unir...
iPad/iPhone hover problem causes the user to double click a link
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Remove hover effects on mouseleave, touchmove and click.
Background
In order to simulate a mouse, browsers such as Webkit mobile fire the following events if a user touches and releases a finger on touch screen (like iPad) (source: Touch And Mouse on html5rocks.com):
touchstart
touchmove
touch...
How to pass a function as a parameter in Java? [duplicate]
...t of this post describes what we used to have to do in the bad old days in order to implement this functionality.
Typically you declare your method as taking some interface with a single method, then you pass in an object that implements that interface. An example is in commons-collections, where y...
Order of event handler execution
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Currently, they are executed in the order they are registered. However, this is an implementation detail, and I would not rely on this behavior staying the same in future versions, since it is not required by specifications.
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How do I configure Notepad++ to use spaces instead of tabs?
...e size to 4.
See documentation: http://docs.notepad-plus-plus.org/index.php/Built-in_Languages#Tab_settings
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