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Displaying posts with tag: postgresql (reset)

ConFoo Vancouver: Call for Papers is open
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ConFoo Vancouver: December 5th-7th 2016

We are happy to open the call for papers of ConFoo Vancouver 2016! If you are interested in speaking about web development and related topics, please submit until June 6th. We will cover travel and hotel for the speakers who require it.

ConFoo Vancouver will be held on December 5-7, 2016. For those who are familiar with ConFoo Montreal, that conference will still be running annually in addition to Vancouver. …

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Sometimes a Variety of Databases is THE Database You Need
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We were just leafing through the 2015 edition of The DZone Guide to Database and Persistence Management, and we noticed some interesting stats in the guide's included survey, about which we'd like to share some observations. The survey is one of the ebook's central features, and it includes feedback from over 800 IT Professionals, with 63% of those respondents coming from companies with over 100 employees and 69% with over 10 years of experience -- they represent a significant and important cross-section of our industry.

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VividCortex Adds Query Analysis Features
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VividCortex is all about optimizing your queries. Many of our users asked us to analyse their queries, searching for common errors and mistakes.

It's true that there are some excellent tools out there to perform the same tasks, such as pt-query-advisor from the great Percona Toolkit. But having this information available right in our web application is something we always wanted to do, too. And today we released that!

Today we added Query Analysis to our …

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When simple SQL can be complex
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I think SQL is a very simple language, but ofcourse I'm biased.

But even a simple statement might have more complexity to it than you might think.

Do you know what the result is of this statement?

SELECT FALSE = FALSE = TRUE;

scroll down for the answer.



























The answer is: it depends.

You might expect it to return false because the 3 items …


































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ConFoo Call for Papers is Open
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ConFoo is once more seeking passionate speakers for the upcoming conference.

The event is happening in Montreal, Canada, between February 24th and 26th, 2016. It is an exciting conference for web developers with speakers from all over the world. It unites many web programming languages under one roof, as well as other topics related to web development. The call for papers closes on September 20th.

ConFoo renews 50% of its speakers each year. If you’re new to this conference, you should definitely submit.

If you …

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SQL, ANSI Standards, PostgreSQL and MySQL
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I have recently been working with the Donors Choose Open Data Set which happens to be in PostgreSQL. Easy enough to install and load the data in PostgreSQL, however as I live and breath MySQL, lets load the data into MySQL.

And here is where start our discussion, first some history.

SQL History

SQL – Structure Query Language is a well known common language for communicating with …

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PostgreSQL Auto IDs
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PostgreSQL’s approach to automatic numbering is as simple as Oracle but different than MySQL, and Microsoft SQL Server. For example, you have a two-step process with Oracle, PostgreSQL, MySQL, and Microsoft SQL Server. First, you create an Oracle table with the GENERATED AS IDENTITY clause, a PostgreSQL table with the SERIAL data type, a MySQL table with the AUTO_INCREMENT clause, and a Microsoft SQL Server table with the IDENTITY(1,1) clause. Then, you need to write an INSERT statement for Oracle, MySQL, or Microsoft SQL Server like:

  1. Oracle’s INSERT statement …
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Django with time zone support and MySQL
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This is yet another story of Django web-framework with time zone support and pain dealing with python datetimes and MySQL on the backend. In other words, offset-naive vs offset-aware datetimes.

Shortly, more about the problem. After reading the official documentation about the time zones, it makes clear that in order to reflect python datetime in the necessary time zone you need to make it tz-aware first and than show in that time zone.

Here is the first issue: tz-aware in what time …

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Starting a new Rails project
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Since Ruby on Rails 4.2 has just been released, perhaps now is a good time to review creating a shiny new Rails project. It’s not often I get to create a new project from scratch, but it’s Christmas and I’ve got a bit of downtime — and an itch I’d like to scratch! So, let’s get started.

I’m aiming to build a wee project that keeps track of OmniFocus perspectives. I’ve noticed that people are sharing their perspectives as screenshots and descriptions, in tweets and blog posts. Wouldn’t it be …

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osquery is neat
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Facebook recently made opensource, osquery. It gives you operating system data via SQL queries! Its very neat, and you can test this even on MacOSX (it works on that platform & Linux). It is by far the project with the most advanced functionality, linked here in this post.

I noticed that rather quickly, there was a PostgreSQL project, called pgosquery, based on Foreign Data Wrappers with a similar idea. (apparently it was written in …

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