add indexes to notifications and notification_history

migrations/versions/0043_notification_indexes.py

@@ -0,0 +1,44 @@
+"""empty message
+
+Revision ID: 0043_notification_indexes
+Revises: 0042_notification_history
+Create Date: 2016-08-01 10:37:41.198070
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '0043_notification_indexes'
+down_revision = '0042_notification_history'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    op.create_index(op.f('ix_notifications_created_at'), 'notifications', ['created_at'])
+    op.create_index(op.f('ix_notification_history_created_at'), 'notification_history', ['created_at'])
+
+    op.create_index(op.f('ix_notifications_status'), 'notifications', ['status'])
+    op.create_index(op.f('ix_notification_history_status'), 'notification_history', ['status'])
+
+    op.create_index(op.f('ix_notifications_notification_type'), 'notifications', ['notification_type'])
+    op.create_index(op.f('ix_notification_history_notification_type'), 'notification_history', ['notification_type'])
+
+    op.create_index(
+        'ix_notification_history_week_created',
+        'notification_history',
+        [sa.text("date_trunc('week', created_at)")]
+    )
+
+
+def downgrade():
+    op.drop_index(op.f('ix_notifications_created_at'), table_name='notifications')
+    op.drop_index(op.f('ix_notification_history_created_at'), table_name='notification_history')
+
+    op.drop_index(op.f('ix_notifications_status'), table_name='notifications')
+    op.drop_index(op.f('ix_notification_history_status'), table_name='notification_history')
+
+    op.drop_index(op.f('ix_notifications_notification_type'), table_name='notifications')
+    op.drop_index(op.f('ix_notification_history_notification_type'), table_name='notification_history')
+
+    op.drop_index(op.f('ix_notification_history_week_created'), table_name='notification_history')