Enforce the nocase collation on the email table

core/admin/migrations/versions/049fed905da7_.py

@@ -0,0 +1,25 @@
+""" Enforce the nocase collation on the email table
+
+Revision ID: 049fed905da7
+Revises: 49d77a93118e
+Create Date: 2018-04-21 13:23:56.571524
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '049fed905da7'
+down_revision = '49d77a93118e'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    with op.batch_alter_table('user') as batch:
+        batch.alter_column('email', type_=sa.String(length=255, collation="NOCASE"))
+
+
+def downgrade():
+    with op.batch_alter_table('user') as batch:
+        batch.alter_column('email', type_=sa.String(length=255))
+