Stereo Interactive & Design - Ann Arbor, Michigan Web Design » MySQL

MySQL Emergency

Scott Meves — Sun, 09 May 2010 17:40:57 +0000

My friends Lawrence Krubner and Darren Hoyt just launched MySql Emergency. It’s a site where you can post urgent MySql questions and post a small bounty ($4 or more) for a good solution to your problem.

MySql Emergency is problem-solving community for MySql, ideal for users seeking quick, succinct answers they can’t find in any MySql forums. MySql Emergency is also great for established MySql developers who want to help problem-solve and be paid fairly for their efforts.

Sometimes Google just doesn’t cut it. Sometimes you want quick, succinct advice specific to your problem. MySql Emergency lets you lean on the knowledge of the masses and still get personalized advice.

If you think you know a thing or two about MySql and might want to make some quick cash on the side, or if you have a question for the community, you can register for free. I’ve earned more than a round of beers by spending just a few minutes sharing tips to fellow developers in need.

If you register using this affiliate link I might be able to get them to buy me another round

MySQL alter table drop constraint…

Scott Meves — Fri, 05 Mar 2010 01:31:38 +0000

I often forget how to modify a MySQL table to drop/add foreign key constraints. I usually think it’s:

ALTER TABLE `tablename` 
DROP CONSTRAINT`my_FK_1`

The proper syntax is “DROP FOREIGN KEY”. I typically use it like this:

ALTER TABLE `tablename`
DROP FOREIGN KEY `my_FK_1`,
ADD CONSTRAINT `my_new_FK`
	FOREIGN KEY (`column_in_this_table`)
	REFERENCES `other_table` (`other_table_pk_column`)
	ON DELETE SET NULL

via MySQL :: MySQL 5.1 Reference Manual :: 12.1.7 ALTER TABLE Syntax.

New version of Sequel Pro released

Scott Meves — Wed, 12 Aug 2009 18:45:13 +0000

A new version of my favorite MySQL GUI has been released today. Check it out below.

Release Notes – Sequel Pro.

CocoaMySQL finally replaced with Sequel Pro

Scott Meves — Tue, 16 Dec 2008 18:11:58 +0000

As much as I love the command line for mysql, sometimes it’s nice to have a GUI to see your tables and columns visually or to do a data dump into CSV. On OS X I’ve always used CocoaMySQL, although it became apparent a long time ago that it was no longer under development. My brother recently told me about Sequel Pro, a “MySQL database management app for Mac OS X 10.5.” You can download it here. So far it’s been working great. It truly does feel like CocoaMySQL with a Leopard interface.

How to set up an SSH tunnel to a remote MySQL server

Scott Meves — Tue, 22 May 2007 16:20:15 +0000

If you have SSH access to your hosting account and want to use a GUI to view your MySQL databases on that remote server, you can set up an SSH tunnel and use a program like CocoaMySQL to manage your remote database. When it works, it can be really userful and is a nice break from a web-based solution like phpMyAdmin.

First, make sure you can login to your host through SSH. After you are certain it works, you can open up a tunnel like this:

ssh -L 3307:[ip address of host]:3306 [username]@[ip address of host] [-p ssh portnumber]

This opens up a tunnel from your local port 3307 to port 3306 on the remote host. Here is the example again with dummy data, using a non-standard ssh port 8022:

ssh -L 3307:192.168.2.1:3306 user@192.168.2.1 -p8022

Once that connection is set up, fire up your MySQL GUI and connect to your local IP address (127.0.0.1) and specify the new port you set up in your tunnel (3307). Here is how it looks in CocoaMySQL.

MySQL data dump

Scott Meves — Tue, 24 Apr 2007 15:02:11 +0000

Although I love the batch process for loading data into the database within a symfony project, sometimes it can be a bit slow if the dataset is large. I find myself reinitializing the database often while I test, not because I change the schema or add new data, but because I want to reset the data back to its initial state. For this, I run the batch process once loading the data from the yaml fixtures, and then do an SQL dump that will run much, much faster from here on out.

mysqldump -e --add-drop-table -u root -p db_name > ./data/sql/latestdump.sql

To repopulate the database with this dump file:

mysql -u root -p dbname < data/sql/latestdump.sql