[Koha-bugs] [Bug 20754] Does table virtualshelfshares need a unique index on shelfnumber+borrowernumber+invitekey?

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=20754

--- Comment #1 from Marcel de Rooy <m.de.rooy at rijksmuseum.nl> ---
Created attachment 75245
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https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=75245&action=edit
Bug 20754: Db revision to remove double accepted shares

[Moved from bug 11943]

Although it is no problem to have them, we could do a cleanup.
This patch just removes duplicate rows from the table.

Note: I considered adding a unique index like:
    ALTER TABLE virtualshelfshares ADD UNIQUE INDEX (shelfnumber,
borrowernumber, invitekey);
But the possible NULL values in borrowernumber and/or invitekey require
additional code changes. So I left it alone.

Test plan:
[1] Create two records with same borrowernumber and shelfnumber in the shares
    table, if not present already.
[2] Run updatedatabase.pl

Signed-off-by: Marcel de Rooy <m.de.rooy at rijksmuseum.nl>

Signed-off-by: Nick Clemens <nick at bywatersolutions.com>

Signed-off-by: Kyle M Hall <kyle at bywatersolutions.com>

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