MYSQL FIX: FIELD ‘XXXX’ DOESN’T HAVE A DEFAULT VALUE

I’ve recently been working on a few of our older websites with newer MySQL installations and am coming across the following error:

1 2	SQLSTATE[HY000]: General error: 1364 Field 'delivery_address_id' doesn't have a default value

This is caused by MySQL having a strict mode set which won’t allow INSERT or UPDATE commands with empty fields where the schema doesn’t have a default value set.

There are a couple of fixes for this.

First ‘fix’ is to assign a default value to your schema. This can be done with a simple ALTER command:

1 2	ALTER TABLE `details` CHANGE COLUMN `delivery_address_id` `delivery_address_id` INT(11) NOT NULL DEFAULT 0 ;

However, this may need doing for many tables in your database schema which will become tedious very quickly. The second fix is to assign a default sql_modeon the mysql server.

If you are using a brew installed MySQL you should edit the my.cnf file in the MySQL directory at /usr/local/Cellar/mysql/<version>/my.cnf. Comment out or change the sql_mode at the bottom:

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# For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html   [mysqld]   # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M   # Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin       # These are commonly set, remove the # and set as required. # basedir = ..... # datadir = ..... # port = ..... # server_id = ..... # socket = .....   # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M   #sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES sql_mode=""

Save the file and restart Mysql:

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launchctl unload -w ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist

NOTE: make sure you run the above as your usual user and not as root/sudo. I did this and MySQL refused to restart as I had caused it to break permissions somewhere.

Alternatively you can comment out the above line and add the sql_mode line to your system MySQL config at /etc/my.cnf:

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[mysqld] sql_mode = ""

Hope this helps someone out there!