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How can I add comments in MySQL?
...with the COMMENT option. The comment is displayed by the SHOW CREATE TABLE and SHOW FULL COLUMNS statements. This option is operational as of MySQL 4.1. (It is allowed but ignored in earlier versions.)"
As an example
--
-- Table structure for table 'accesslog'
--
CREATE TABLE accesslog (
aid int(...
How to go to a URL using jQuery? [duplicate]
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What's the difference between window.location.href and location.href
– Yahya Uddin
Aug 21 '17 at 23:20
1
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Laravel 4: how to “order by” using Eloquent ORM [duplicate]
...escending($query)
{
return $query->orderBy('id','DESC');
}
And outside the model you would have:
$posts = Post::idDescending()->get();
More info: http://laravel.com/docs/eloquent#query-scopes
share
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Count number of files within a directory in Linux? [closed]
... the top adding up the file sizes for a total amount. You should use ls -1 and not the ls -l. Also if one wants hidden files but without the directories . and .. you should use ls -1A | wc -l
– Daniel Biegler
Mar 7 '18 at 11:02
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JavaScript - onClick to get the ID of the clicked button
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And the value of the "id" attribute can be any string. It doesn't have to start with a letter.
– Jason LeBrun
Jan 28 '11 at 6:03
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Rails find_or_create_by more than one attribute?
There is a handy dynamic attribute in active-record called find_or_create_by:
5 Answers
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Warning: push.default is unset; its implicit value is changing in Git 2.0
...than the instruction telling us to open the documentation and search for a string.
– hertzsprung
Aug 4 '13 at 17:18
116
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Opposite of %in%: exclude rows with values specified in a vector
... to Z. I want to create a subset D2, which excludes some values, say, B, N and T. Basically, I want a command which is the opposite of %in%
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How to succinctly write a formula with many variables from a data frame?
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A slightly different approach is to create your formula from a string. In the formula help page you will find the following example :
## Create a formula for a model with a large number of variables:
xnam <- paste("x", 1:25, sep="")
fmla <- as.formula(paste("y ~ ", paste(xnam, col...