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MySQL join with where clause
... or the where is equivalent. However, with an outer join, they are vastly different.
As a join condition, you specify the rowset that you will be joining to the table. This means that it evaluates user_id = 1 first, and takes the subset of user_category_subscriptions with a user_id of 1 to join to ...
How do I show a MySQL warning that just happened?
...ave to run it immediately after a query that had warnings attached to it. If you ran any other queries in between, or dropped the connection, then SHOW WARNINGS won't work.
The MySQL manual page for SHOW WARNINGS doesn't indicate any other methods, so I'm fairly certain that you're stuck with it.
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How do you manage databases in development, test, and production?
...o keep track of the current database version, and only execute the scripts if they are for a newer version.
Use a migration solution. These solutions vary by language, but for .NET I use Migrator.NET. This allows you to version your database and move up and down between versions. Your schema is s...
How do you convert epoch time in C#?
...Offset2 = DateTimeOffset.FromUnixTimeMilliseconds(epochMilliseconds);
And if you need the DateTime object instead of DateTimeOffset, then you can call the DateTime property
DateTime dateTime = dateTimeOffset .DateTime;
sha...
Get the data received in a Flask request
...l not be uploaded.
request.values: combined args and form, preferring args if keys overlap
request.json: parsed JSON data. The request must have the application/json content type, or use request.get_json(force=True) to ignore the content type.
All of these are MultiDict instances (except for json)...
Get Root Directory Path of a PHP project
...oes depends where you use __DIR__ . It is relative to the file itself, so if in an include, inside a sub directory, it'll not return just your root directory.
– Iris
Jun 5 '15 at 14:00
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or (HTML5)
...<menu>'s type attribute is omitted or set to "toolbar". See the specification for the <li> element and the <menu> element.
– tomekwi
May 27 '15 at 7:31
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How can I get query string values in JavaScript?
...se just some pure JavaScript:
function getParameterByName(name, url) {
if (!url) url = window.location.href;
name = name.replace(/[\[\]]/g, '\\$&');
var regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)'),
results = regex.exec(url);
if (!results) return nu...
Is there a good Valgrind substitute for Windows?
...have no other need or interest in moving my OS to Linux so I was wondering if there is a equally good program for Windows.
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How do you unit test a Celery task?
...esting Celery within Django but doesn't explain how to test a Celery task if you are not using Django. How do you do this?
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