The ‘MySQL’ Archives
Posted June 19, 2006 by

Get MySQL date in RFC-822 format for RSS feeds

To get the PubDate element of an RSS feed to validate, it needs to be in RFC-822 format. MySQL has flexible ways of working with dates and times which make this a simple task.

Category MySQL

Posted February 22, 2005 by

Show or list tables in a MySQL database

Once you have selected a database, you can list the tables in it by using the show command.

Category MySQL

Posted December 20, 2004 by

MySQL dump import -> Error 1217

When using innodb tables and foreign key constraints, importing a mysqldump can sometimes generate foreign key errors.

Category MySQL

Posted October 31, 2004 by

Solve: Can’t connect to local MySQL server through socket /tmp/mysql.sock

A frequent error message received when using the mysql command line utility is: Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock’ While this error message can be frustrating, the solution is simple.

Category MySQL

Posted June 30, 2004 by

Use regular expressions in MySQL SELECT statements

A very cool and powerful capability in MySQL and other databases is the ability to incorporate regular expression syntax when selecting data. The regular expresion support in MySQL is extensive. This recipe reviews regular expression use in MySQL and lists the supported regular expression metacharacters.

Category MySQL

Posted March 18, 2004 by

Delete a column from an existing MySQL table

The SQL command in this recipe removes a column and the column’s data from an existing MySQL table.

Category MySQL

Posted February 8, 2004 by

Modify an existing MySQL column

The best laid plans of mice and DBAs oft go awry, so it is sometimes necessary to change the characteristics of a column after it exists and contains data. Beware whenever you make changes to your database — always make a backup first.

Category MySQL

Posted February 8, 2004 by

Add a column to an existing MySQL table

MySQL tables are easy to extend with additional columns.

Category MySQL

Posted February 8, 2004 by

Create a MySQL table with a primary key

A primary key uniquely identify a row in a table. One or more columns may be identified as the primary key. The values in a single column used as the primary key must be unique (like a person’s social security number). When more than one column is used, the combination of column values must be […]

Category MySQL

Posted December 14, 2003 by

Drop or delete a table in MySQL

To remove a table from a MySQL database, and remove all of its data, use the following SQL command.

Category MySQL