eli geske » MySQL

#2006 MySQL server has gone away

eligeske — Sat, 10 Sep 2011 23:15:21 +0000

Recently I was doing an import of a clients database from production which was so so in size. But I was installing it on a fresh install of WAMP Server. First it died because of upload_max_filesize inside the php.ini, that one is a simple one. After changing that to a size larger than the db import script PHPMYADMIN threw the #2006 MySQL server has gone away.

After scouring the web and the mysql site and found that if a packet is too large the mysql connection will be closed.

So to set the max size allowed for the packet in mysql change:

Source code

max_allowed_packet = 60M

By default it was set to 1M and 60 seemed to be plenty to do the trick.

MySQL query for FirstName, LastName search

eligeske — Fri, 19 Aug 2011 17:13:04 +0000

In most cases databases are set up to split a persons first name and last name. So when doing a search for people in a database you need to join the two fields together in the search statement.

Or you could split it into separate queries based on the space, but that would add more server load and function time, not good.

It’s much easier to use the MySQL concat() method, or concat_ws() which is concat with a seperator.

Source code

51&q=SELECT&lr=lang_en">SELECT * 51&q=FROM&lr=lang_en">FROM `table_name` 51&q=WHERE&lr=lang_en">WHERE 5.1/en/string-functions.html">concat_ws(' ', 'FirstName', 'LastName');

Please note that in the first quotes is a space.