https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=40057

--- Comment #1 from Pedro Amorim <[email protected]> ---
Created attachment 182919
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https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=182919&action=edit
Bug 40057: Fix db revision

Test plan (ktd):
1) reset_all
2) Run first part of the 241200017.pl atomicupdate manually
        koha-mysql kohadev
        ALTER TABLE illrequests DROP FOREIGN KEY illrequests_bnfk;
3) Create an ILL request linked to a borrower that doesn't exist (simulate old
data):
        INSERT INTO illrequests (, , ) VALUES ('Standard', '99999', 'CPL');
4) Run the 2nd part of the atomicupdate manually:
        ALTER TABLE illrequests ADD CONSTRAINT illrequests_bnfk
        FOREIGN KEY()
        REFERENCES  ()
        ON DELETE SET NULL ON UPDATE CASCADE;
5) Notice you get the error:
        ERROR 1452 (23000): Cannot add or update a child row: a foreign key
constraint fails (., CONSTRAINT  FOREIGN KEY () REFERENCES  () ON DELETE SET
NULL ON UPDATE CASCADE)
6) Run the added query in the patch:
        UPDATE illrequests SET borrowernumber = NULL WHERE borrowernumber NOT
IN (SELECT borrowernumber FROM borrowers);
7) Repeat step 4)
8) Notice there's no errors

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