Mon, 20 Jun 2016 15:10:24 +0200 [migration] drop identity_relation if it exists
Sylvain Thénault <sylvain.thenault@logilab.fr> [Mon, 20 Jun 2016 15:10:24 +0200] rev 11365
[migration] drop identity_relation if it exists It has been generated erroneously for a while, then fixed but not properly deleted from old databases. Don't use IF EXISTS for sqlserver compat.
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