Add rate to the primary key of ft_billing.

Use the primary key constraint in the upsert statement (easier to read than listing all the columns)

migrations/versions/0191_ft_billing_pkey.py

@@ -0,0 +1,29 @@
+"""
+
+Revision ID: 0191_ft_billing_pkey
+Revises: 0190_another_letter_org
+Create Date: 2018-05-21 14:24:27.229511
+
+"""
+from alembic import op
+
+revision = '0191_ft_billing_pkey'
+down_revision = '0190_another_letter_org'
+
+
+def upgrade():
+    op.get_bind()
+    op.execute("ALTER TABLE ft_billing DROP CONSTRAINT ft_billing_pkey")
+    sql = """ALTER TABLE ft_billing ADD CONSTRAINT 
+    ft_billing_pkey PRIMARY KEY 
+    (bst_date, template_id, service_id, rate_multiplier, provider, notification_type, international, rate)"""
+    op.execute(sql)
+
+
+def downgrade():
+    op.get_bind()
+    op.execute("ALTER TABLE ft_billing DROP CONSTRAINT ft_billing_pkey")
+    sql = """ALTER TABLE ft_billing ADD CONSTRAINT 
+    ft_billing_pkey PRIMARY KEY 
+    (bst_date, template_id, service_id, rate_multiplier, provider, notification_type, international)"""
+    op.execute(sql)