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In SQL, what's the difference between count(column) and count(*)?
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count(*) counts NULLs and count(column) does not
[edit] added this code so that people can run it
create table #bla(id int,id2 int)
insert #bla values(null,null)
insert #bla values(1,null)
insert #bla values(null,1)
insert #bla values(1,null)
in...
Vagrant ssh authentication failure
...lic key to ~/.ssh/authorized_keys on the Vagrant VM. You can do it by copy-and-pasting or using a tool like ssh-copy-id (user: root password: vagrant port: 2222) ssh-copy-id '-p 2222 root@127.0.0.1'
If still does not work try this:
Remove insecure_private_key file from c:\Users\USERNAME\.vagrant...
MySQL COUNT DISTINCT
...love SQL because you get questions like "How do I count distinct user IDs" and the answer is just "Count(Distinct user_id)"
– Tim
Nov 13 '18 at 15:29
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Validation of radio button group using jQuery validation plugin
...l you have to do is set one of the members of the radio set to be required and jquery will take care of the rest:
<input type="radio" name="myoptions" value="blue" class="required"> Blue<br />
<input type="radio" name="myoptions" value="red"> Red<br />
<input type="radio"...
How do I get AWS_ACCESS_KEY_ID for Amazon?
...ited Dec 17 '15 at 0:20
New Alexandria
6,07644 gold badges4747 silver badges6969 bronze badges
answered Jan 29 '14 at 21:46
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Proper way to return JSON using node or Express
...complained about the format that I was using because he wanted to do a get and for some reason they could not read my object properly. Thanks for noting the nice version of stringify. :)
– MightyMouse
Oct 31 '13 at 0:36
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How to get a one-dimensional scalar array as a doctrine dql query result?
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PHP < 5.5
You can use array_map, and since you only have on item per array, you can elegantly use
'current' as callback, instead of writing a closure.
$result = $em->createQuery("SELECT a.id FROM Auction a")->getScalarResult();
$ids = array_map('curr...
How to get text box value in JavaScript
...ms[0].elements[0].value;//by index
//word = a word from form input
var kodlandi = escape(word);//apply url encoding
alert(escape(word));
or
alert(kodlandi);
the problem you are not using encoding for input values from form
so
not browser adds ones to ...
ontop has some problems as unicode encod...
Get size of all tables in database
... i.object_id
INNER JOIN
sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN
sys.allocation_units a ON p.partition_id = a.container_id
LEFT OUTER JOIN
sys.schemas s ON t.schema_id = s.schema_id
WHERE
t.NAME NOT LIKE 'dt%'
AND t.is_ms_shipped =...
How to retrieve form values from HTTPPOST, dictionary or?
... controller action take an object which would reflect the form input names and the default model binder will automatically create this object for you:
[HttpPost]
public ActionResult SubmitAction(SomeModel model)
{
var value1 = model.SimpleProp1;
var value2 = model.SimpleProp2;
var value...