# HG changeset patch
# User Sylvain Thénault <sylvain.thenault@logilab.fr>
# Date 1466428224 -7200
# Node ID eedf0684533cba4313ecb95e2d07743d049928d8
# Parent  a702d31ddd8fae8d84c872642969a0b869874969
[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.

diff -r a702d31ddd8f -r eedf0684533c cubicweb/misc/migration/3.23.0_Any.py
--- a/cubicweb/misc/migration/3.23.0_Any.py	Wed Jun 22 14:35:43 2016 +0200
+++ b/cubicweb/misc/migration/3.23.0_Any.py	Mon Jun 20 15:10:24 2016 +0200
@@ -60,3 +60,6 @@
     sql('ALTER TABLE cw_%(e)s ADD CONSTRAINT %(c)s CHECK(%(v)s)' % args)
 
 commit()
+
+if 'identity_relation' in helper.list_tables(cnx.cnxset.cu):
+    sql('DROP TABLE identity_relation')