Planet MySQL Planet MySQL: Meta Deutsch Español Français Italiano 日本語 Русский Português 中文
Showing entries 1 to 10 of 612 10 Older Entries

Displaying posts with tag: database (reset)

New! MySQL Connector/Arduino release-1.0.4 GA and Documentation
Employee +1 Vote Up -0Vote Down

After several iterations and a long period of community evaluation, I am happy to report I've released the newest, stable release of the MySQL Connector/Arduino. This library is designed to allow you to connect your Arduino via an Ethernet or WiFi shield to a MySQL database server running on your network (or the Internet!).

New Documentation!Best of all, I've written a reference manual that includes examples of how to use the connector in a variety of ways. Included in the document are advice on how to write your sketches, troubleshooting tips, and a long FAQ compiled from the many questions from my blogs.

Changes …



  [Read more...]
Yahoo at Percona Live
+0 Vote Up -0Vote Down

We had a great time meeting with folks from the industry and are excited about the innovations being pursued by the community and various companies. 

Videos of our keynote panel participation and talks are available now.


Percona Live 2015 Keynote Panel discussion - Ritesh Chhajer



High Availability using Percona XtraDB Cluster - Trey Raymond & Yashada …




  [Read more...]
Log Buffer #433: A Carnival of the Vanities for DBAs
+0 Vote Up -0Vote Down

This Log Buffer Edition covers Oracle, SQL Server and MySQL blogs of the running week.

Oracle:

  • While checking the sources of the Cassandra/NetBeans integration into GitHub yesterday, something went very badly wrong and ALL the source files in my Maven project that disappeared!
  • AWR Reports, Performance Hub, historisches SQL Monitoring in 12c
  • Oracle …
  [Read more...]
MySQL User Camp @ Bangalore on 26th June
Employee +1 Vote Up -0Vote Down

MySQL India team is back with another MySQL user camp.

The day of the week, time and venue remains the same:

Date: Jun 26th, 2015

Day : Friday

Time: 3-5:30 pm

Place: OC001, Block1, B wing, Kalyani Magnum Infotech Park, J.P Nagar, 7th Phase Bangalore, India

During our previous meetings we were requested by our attendees that they would like to hear about implementation of GTID by the MySQL community. We have listened to you and requested a community member to talk about their experience with the implementation of  GTID. Our first talk is :

  • MySQL Tools Usage in …
  [Read more...]
Date Table Goodies (As Promised)
+0 Vote Up -0Vote Down

Goodies… but not the kind you can eat

You’re probably wondering, “What does this dandelion picture have to do with dates?” I wondered the same thing when I typed “calendar” into the image search box. Forget the dandelion. Let’s talk date table fun. On to the “goodies” I promised.In case you missed it, I posted earlier about the wonder of a “dates” table (Dates Tables (More Numbers Table Sugar)) I said I would probably make posts about why it is so wonderful. I like to deliver on what I promise.

Since the previous posts use …

  [Read more...]
Simple MySQL Key-Value Pair
+0 Vote Up -0Vote Down

Hooray for Data Structures… Where Are They?

The Key-Value Pair is my favorite programming tool. Most SQL type databases lack this feature in it simplest form. Some would argue, “Well that’s because databases don’t need dah-blah-dee-blah-blah…” Well, if they don’t need it I don’t need to write this post. :p

How many times have you found yourself asking “Why isn’t there at least simple array support!?” When you don’t want the overhead of creating a table, or a temporary table, simple data structures really do come in handy (hint, hint, nudge, nudge to all the companies producing database software with stored routine support). …

  [Read more...]
Dates Tables (More Numbers Table Sugar)
+0 Vote Up -0Vote Down

Why A Table of Dates?

I thought it would be nice to build on the numbers table with another very useful tool.

Dates are pretty important–especially if you are playing with data warehousing. Not only dates, but all the different properties and derived goodies contained within them. You really don’t need a dates table, unless you care about efficiency and getting to all the good stuff quickly. Perhaps I’ll showcase some of the “goodies” in later posts.

Sure, most databases have built-in functions to get everything you might want. But do you really want all the inefficiency that comes with calling functions and doing …

  [Read more...]
MySQL CSV to Rows (Fun with Numbers)
+0 Vote Up -0Vote Down

Making The Numbers Table Useful

It’s not easy to find a solution to a very simple problem in MySQL: converting a comma separated list of values into rows. Oracle database users find gobs of tutorials on using REGEXP and CONNECT BY LEVEL to make this happen. MySQL doesn’t have that. So, use the numbers table from the previous post!

The transposing is made possible by (ab)using the SUBSTRING_INDEX function. I love this function. It is right up there with GROUP_CONCAT when mixing NULL and non-null strings.

I will be using comma separated values. You can use any delimiter …

  [Read more...]
Numbers, Numbers Everywhere
+0 Vote Up -0Vote Down

Why You Care About Numbers

I have worked a bit with Oracle. As such, I hang out around Oracle developers. There seems to be a common complaint among our kind when it comes to MySQL–”There aren’t any sequences!”

It never really bothered me. I wasn’t always an Oracle guy, so I didn’t always have sequences. I’m the kind of person who likes to experiment and make things happen. It just so happens there is a nice tool to help with this perceived absence: the “numbers table.”

It is really easy to set up. And, regardless of your database background, I think you will grow to love your utility.

There are multiple …

  [Read more...]
Technology for the Non-Technical
+0 Vote Up -0Vote Down

I am potentially one of the least technical people in my generation. I’m 30 and I am afraid of my cellphone, my laptop, Netflix, the microwave…. Okay, afraid is maybe a strong word, but baffled by them at the very least.

In high school, while my classmates wrote most of their papers and assignments on the computer, I insisted on writing everything out by hand and only typed it out afterwards if absolutely required. It wasn’t that I had issues with typing – my mom who worked as an administrator for many years made sure that I learned to type from a very young age and I type quickly with a reasonable amount of accuracy. I just felt that writing by hand …

  [Read more...]
Showing entries 1 to 10 of 612 10 Older Entries

Planet MySQL © 1995, 2015, Oracle Corporation and/or its affiliates   Legal Policies | Your Privacy Rights | Terms of Use

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.