Did you ever wonder what triggers the advice in ClusterControl that your disk is filling up? Or the advice to create primary keys on InnoDB tables if they don’t exist? These advisors are mini scripts written in the ClusterControl Domain Specific Language (DSL) that is a Javascript-like language. These scripts can be written, compiled, saved, executed and scheduled in ClusterControl. That is what the ClusterControl Developer Studio blog series will be about.

Today we will cover the Developer Studio basics and show you how to create your very first advisor where we will pick two status variables and give advice about their outcome.

The advisors

Advisors are mini scripts that are executed by ClusterControl, either on-demand or after a schedule. They can be anything from simple configuration advice, warning on thresholds or more complex rules for …

you are working on laravel php framework and you want to give any other site URL we can easily give url using a tag like hrefhttpswwwfacebookcom but if you are work on laravel then it cant redirect on given URL because laravel always redirect on current site but we have solution of this p

Now i am going to show how to create responsive menu in your html website i will show you how to create responsive menu using css html and jquery we have to also use media query it is a pretty simple to create responsive menu now i listed two file one is html and second is css file this two fil

RDS for MySQL on AWS allows you to restore to any point in time for your backup retention period, minus the last 5 minutes or so. Restoration creates a new instance, it does not overwrite whatever instance you’re restoring. AWS’s use of the word restore is a bit confusing because restore often means “take your production database server and overwrite it with data from a backup”. As far as I can tell, Amazon never means this. When you restore, AWS creates another database server and writes all the data to the new instance, both when you’re using restoring to a point-in-time or from a DB snapshot. If you needed to switch servers, you’d have to point your database to the new instance.

Reference

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With Python you would normally use MySQL Connector/Python or the older MySQLdb to connect from Python to MySQL, but there are more options.

There are also multiple Python implementations: CPython (the main implementation), PyPy, Jython and IronPython. PyPy tries to be faster than CPython by using a Just-in-Time compiler. Jython runs on the JVM and IronPython runs on the .NET CLR.

Connector/Python by default (Without the C Extension) is a pure Python implementation and can work with most if not all implementations. And for MySQLdb there is a drop-in replacement called PyMySQL, which is a pure python implementation.

So there are many options …

We’ve already discussed using the ORDER BY clause with subqueries. You can also, however, use the 

ORDER BY

 clause with sorting results of one of the columns. Actually, this is most common way to use this clause.

Sometimes such queries require using temporary tables or filesort, and a regular

EXPLAIN

  clause provides this information. But it doesn’t show if this job is needed for

ORDER BY

 or for optimizing another part of the query.

For example, if we take a pretty simple query ( 

select distinct last_name from employees order by last_name asc

) and run

EXPLAIN

  on it, we can see that both the …

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you can check your JavaScript OR jQuery object is empty or not because we need to check many place our jQuery object is empty null or undefined etc So usually we can check using isEmptyObject as i explained as underhow to check empty object in javascript how to check empty object in jqu