Comments on: Silly GORM tricks, part III: SQL keywords as attributes

By: Costa

Costa — Mon, 26 May 2008 14:50:23 +0000

Thank you for this post! It helped me immensely. Grails really shouldn’t fail silently like this.

By: dion gillard

dion gillard — Wed, 21 May 2008 23:31:25 +0000

I raised a JIRA for this when I had it…

http://jira.codehaus.org/browse/GRAILS-2898

By: Kalyan Dasika

Kalyan Dasika — Thu, 15 May 2008 00:14:32 +0000

Thank you for posting with a detailed explanation. I will sure remember this.

By: Shawn Hartsock

Shawn Hartsock — Wed, 14 May 2008 01:31:29 +0000

BTW, Does this bug sound like the same issue:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-2622

By: Shawn Hartsock

Shawn Hartsock — Wed, 14 May 2008 00:57:41 +0000

I’ve run into these a couple of times myself. I noticed that MySQL has the ability to “escape” table column names and table names. That means you could use a reserved word for a column or table name provided you write it surrounded with `backquotes` So it should be something that Hibernate does for us by selecting the database dialect. However, I haven’t seen this setting… check this out:

http://dev.mysql.com/doc/refman/5.1/en/reserved-words.html

… so it should be very doable to make the Hibernate/GORM MySQL dialect escape all table names and all column names automagically.

FYI: I ran into this problem the first time when I was doing some MythTV hacking with some straight C to MySQL code… someone should raise name escaping as a feature/enhancement to the Hibernate/GORM guys since this is happening below the Grails layer.

Just my two bits on the topic. You could see this as something people should just “know” about MySQL…

By: Juan Jose

Juan Jose — Tue, 13 May 2008 22:44:58 +0000

Hi,

the database vendor Mimer has a sql validator and a list of sql keywords:
http://developer.mimer.com/validator/index.htm

By: Guillaume Laforge

Guillaume Laforge — Tue, 13 May 2008 13:11:06 +0000

There’s a page on that topic on the Grails site:
http://grails.org/Reserved+Names

But I guess it needs to be expanded a little

By: Dierk König

Dierk König — Mon, 12 May 2008 16:20:21 +0000

true, true. I ran into similar errors (once when live coding on stage ;-)). I guess we should file JIRA feature request for better error-messages at this point and ask the tool providers (IDEA, netbeans, and eclipse) to issue respective warnings. Note that this applies to names of the domain class (i.e. table names) as well and the set of reserved names differ between sql dialects of the database vendor.