[support] Upgrading from Drupal 6 to Drupal 7

[Earnie Boyd]

On Thu, May 10, 2012 at 2:11 PM, Earnie Boyd
<earnie at users.sourceforge.net> wrote:
> I have noticed on a few occasions that when upgrading from Drupal 6 to
> Drupal 7 when running update.php things seem to go alright with the
> first update.php.  However, if you execute update.php again you'll
> have update items that did not complete and will not complete until
> you fix the code.  In particular there are some db_insert() queries
> that will fail due to duplicate entries for the data being inserted.
> I have found these in both modules/system/system.install and
> modules/block/block.install.  The simplest resolution to these is to
> modify those files and wrap the insert with a try {} catch() {} block
> similar to shown in the api documentation[1] except when you catch the
> event you need to continue on.
>
> [1] http://api.drupal.org/api/drupal/includes%21database%21database.inc/group/database/7
>

Another thing I find on occasion is an error indicating the 'language'
field in the node table doesn't have a default.  Going to the DB and
supplying a default resolves the issue but is that the correct thing
to do?  I do not have the locale module enabled so there is only the
default or undefined language.  I am at a loss at trying to find an
issue that might exist already for this at issues/drupal.  Does anyone
know of one that might be a good fit for this?

-- 
Earnie
-- https://sites.google.com/site/earnieboyd