Author: Martin Simka <msimka(a)redhat.com>
Date: 2018-07-18 (Wed, 18 Jul 2018)
HHH-12823 CompositeIdTest.testDistinctCountOfEntityWithCompositeId fails on databases
that don't support tuple distinct counts because it expects wrong exception
The SQLGrammarException is now wrapped in a PersistenceException, we
should take that into account.
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