Jake Dallimore d7d4a09707 MDL-54864 core_question: Enforce context,stamp uniqueness for category ...

Added an upgrade step to remove duplicate stamps, added a unique index
on (contextid, stamp) and modified the question_category edit code such
that stamp duplication in the same context is not permitted.

2016-08-22 09:44:52 +08:00

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lib.php

MDL-54864 core_question: Enforce context,stamp uniqueness for category

2016-08-22 09:44:52 +08:00