Bug 36993: Upgrade fails at 23.12.00.023 [Bug 32132]

Bug 36993: Upgrade fails at 23.12.00.023 [Bug 32132]

Database update fails on some databases because of
foreign key constraint error. This comes from attempt
to make column aqbudgets.budget_period_id not accept
NULL values. Update also fails if there are rows where
column aqbudgets.budget_period_id doesn't match any
values in aqbudgetperiods.budget_period_id.

To test:
1. Remove changes made in bug 32132 and downgrade your database:
- ALTER TABLE aqbudgets MODIFY COLUMN `budget_period_id` INT(11) NULL;
- UPDATE aqbudgets SET budget_period_id = NULL
WHERE budget_period_id IN(SELECT budget_period_id FROM aqbudgetperiods
WHERE budget_period_description = "Budget for funds without budget");
- DELETE FROM aqbudgetperiods
WHERE budget_period_description = "Budget for funds without budget";
- UPDATE systempreferences SET value="23.1200022" WHERE variable = "Version;
2. Upgrade your database (e.g. running installer/data/mysql/updatedatabase.pl)
=> Update fails on foreign key constraint error.
4. Apply this patch.
5. Try to update your database again.
=> Database should now be upgraded succesfully.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>