Fix constraint additions.
Fix constraint additions.


Former-commit-id: 6952f340139436bf3bb6c73b09fcade8b3d31c62
amaliujia/CMUDB-peloton,larryxiao/peloton,omegaga/peloton,larryxiao/peloton-1,larryxiao/peloton-1,ranxian/peloton,omegaga/peloton,amaliujia/CMUDB-peloton,larryxiao/peloton,larryxiao/peloton-1,ranxian/peloton,ranxian/peloton,larryxiao/peloton,amaliujia/CMUDB-peloton,amaliujia/CMUDB-peloton,larryxiao/peloton,omegaga/peloton,larryxiao/peloton,larryxiao/peloton,ranxian/peloton,omegaga/peloton,omegaga/peloton,larryxiao/peloton-1,amaliujia/CMUDB-peloton,larryxiao/peloton-1,ranxian/peloton,omegaga/peloton,larryxiao/peloton-1,amaliujia/CMUDB-peloton,larryxiao/peloton,larryxiao/peloton-1,amaliujia/CMUDB-peloton,ranxian/peloton,omegaga/peloton