If we set items.itype to NULL, aren’t we potentially causing problems for 
people who want to JOIN “statistics” and “items” tables?

 

Do we already have software logic to prevent Item Types from being deleted if 
they’re used in items or biblioitems? 

 

David Cook

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From: koha-devel-boun...@lists.koha-community.org 
<koha-devel-boun...@lists.koha-community.org> On Behalf Of Tomas Cohen Arazi
Sent: Wednesday, 31 July 2019 5:08 AM
To: Katrin Fischer <katrin.fischer...@web.de>
Cc: koha-devel <koha-devel@lists.koha-community.org>
Subject: Re: [Koha-devel] items.itype FK constraint?

 

We can set a FK constraint while allowing NULL too. The reason for me to post 
this on the list is to hear (probably) historical reasons for this constraint 
not to be set already at DB level.

 

Thanks for your replies!

 

El mar., 30 jul. 2019 a las 16:05, Katrin Fischer (<katrin.fischer...@web.de 
<mailto:katrin.fischer...@web.de> >) escribió:

Hi Sophie,

I think on database level we need to allow NULL, because of the 
item-level_itype 'record level' setting. I understand that itemtypes are not 
set on item level at all in that case?

Katrin

On 30.07.19 16:32, Sophie Meynieux wrote:

Hello,

But itype must not be null if syspref item-level_itype is on, isn't it ? 

S. Meynieux

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Le 29/07/2019 à 20:17, Katrin Fischer a écrit :

+1

With a on delete set null?

On 29.07.19 19:39, Tomas Cohen Arazi wrote:

Why shouldn't we add it :-D


 

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