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Mongoose query where value is not null
...
$ne
selects the documents where the value of the field is not equal to
the specified value. This includes documents that do not contain the
field.
User.find({ "username": { "$ne": 'admin' } })
$nin
$nin selects the do...
In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?
...ave DATE, DATETIME, TIME and TIMESTAMP column data types; just as you have CHAR, VARCHAR, FLOAT and INTEGER.
So, you ask, what's the difference? Well, some of them are self-explanatory. DATE only stores a date, TIME only stores a time of day, while DATETIME stores both.
The difference between DATE...
Set up DNS based URL forwarding in Amazon Route53 [closed]
...r this guide, I'll use the name "url-redirect-example.vivekmchawla.com".
Select whatever region works best for you. If you don't know, keep the default.
Don't worry about setting up logging. Just click the "Create" button when you're ready.
Step 3: Enable Static Website Hosting and Specify...
How to convert a string or integer to binary in Ruby?
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@bta- I'm encoding all these characters into binary so I can use them in a genetic algorithm. I really like the idea of a lookup table for the encode/decode since the set is limited to 0..9 and +-*/
– mcmaloney
Feb ...
Can you use an alias in the WHERE clause in mysql?
...ts an unknown column. Is there any way to get around this issue? I need to select records that have a rating higher than x. Rating is calculated as the following alias:
...
How do I quickly rename a MySQL database (change schema name)?
...y some developers. phpMyAdmin has an operation for this.
From phpMyAdmin, select the database you want to select. In the tabs there's one called Operations, go to the rename section. That's all.
It does, as many suggested, create a new database with the new name, dump all tables of the old databas...
How do I ignore all files in a folder with a Git repository in Sourcetree?
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For Sourcetree users: If you want to ignore a specific folder, just select a file from this folder, right-click on it and do "Ignore...". You will have a pop-up menu where you can ignore "Ignore everything beneath: <YOUR UNWANTED FOLDER>"
If you have the "Ignore" option greyed out...
Webrick as production server vs. Thin or Unicorn?
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WEBrick also can't handle longer URI's, if they exceed 2083 chars you'll see a crash. Thin does not have these problems, which made it superior - already in development.
share
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impro...
Embedding SVG into ReactJS
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@AndrewPatton Multiple Css Class names with the tick char does not work: '.class1, .class2{fill: #005baa;}' How can I fix that?
– HelloWorld
Jun 7 '18 at 15:07
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How to alias a table in Laravel Eloquent queries (or using Query Builder)?
...AS. Try
$users = DB::table('really_long_table_name AS t')
->select('t.id AS uid')
->get();
Let's see it in action with an awesome tinker tool
$ php artisan tinker
[1] > Schema::create('really_long_table_name', function($table) {$table->increments('id');});
// N...