[Koha-bugs] [Bug 8480] auth_subfield_structure is not cleared when deleting an authority type

[bugzilla-daemon at bugs.koha-community.org]

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=8480

--- Comment #1 from Jonathan Druart <jonathan.druart at biblibre.com> ---
Created attachment 37402
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http://bugs.koha-community.org/bugzilla3/attachment.cgi?id=37402&action=edit
Bug 8480: Add constraint on auth_subfield_structure.authtypecode

In order not to have useless entries in the auth_subfield_structure
table, this patch modifies the DB structure to add a foreign key on the
authtypecode column.
Note that the auth_tag_structure already has this constraint.

Test plan:
0/ Don't apply this patch
1/ Create a now authority type 'RM_ME'
2/ Look at the MARC structure, to create the subfield structure and
populate the auth_subfield_structure table.
3/ Delete the authority type
4/ Using your SQL cli:
 SELECT COUNT(*) FROM auth_subfield_structure WHERE authtypecode='RM_ME';
=> The data are still in this table.
5/ Apply this patch
6/ Execute the updatedb entry
7/ Confirm the entries in the auth_subfield_structure table related to
RM_ME have been deleted
8/ Repeat 1, 2 and 3 and verify the auth_subfield_structure entries have
been correctly removed.

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