update schema and prepared statement for Memcached
update schema and prepared statement for Memcached

AllisonWang/peloton,AllisonWang/peloton,haojin2/peloton,vittvolt/peloton,PauloAmora/peloton,AngLi-Leon/peloton,vittvolt/peloton,phisiart/peloton-p3,haojin2/peloton,jessesleeping/iso_peloton,vittvolt/15721-peloton,wangziqi2016/peloton,AngLi-Leon/peloton,jessesleeping/iso_peloton,AllisonWang/peloton,PauloAmora/peloton,malin1993ml/peloton,AngLi-Leon/peloton,seojungmin/peloton,AngLi-Leon/peloton,AngLi-Leon/peloton,haojin2/peloton,AngLi-Leon/peloton,prashasthip/peloton,cmu-db/peloton,vittvolt/peloton,prashasthip/peloton,jessesleeping/iso_peloton,phisiart/peloton-p3,prashasthip/peloton,cmu-db/peloton,prashasthip/peloton,vittvolt/15721-peloton,jessesleeping/iso_peloton,cmu-db/peloton,apavlo/peloton,PauloAmora/peloton,wangziqi2016/peloton,apavlo/peloton,AllisonWang/peloton,eric-haibin-lin/peloton-1,yingjunwu/peloton,ShuxinLin/peloton,AllisonWang/peloton,vittvolt/15721-peloton,ShuxinLin/peloton,ShuxinLin/peloton,seojungmin/peloton,vittvolt/15721-peloton,cmu-db/peloton,yingjunwu/peloton,yingjunwu/peloton,ShuxinLin/peloton,haojin2/peloton,yingjunwu/peloton,PauloAmora/peloton,haojin2/peloton,cmu-db/peloton,prashasthip/peloton,wangziqi2016/peloton,malin1993ml/peloton,malin1993ml/peloton,apavlo/peloton,malin1993ml/peloton,wangziqi2016/peloton,apavlo/peloton,jessesleeping/iso_peloton,wangziqi2016/peloton,eric-haibin-lin/peloton-1,vittvolt/15721-peloton,phisiart/peloton-p3,ShuxinLin/peloton,yingjunwu/peloton,phisiart/peloton-p3,wangziqi2016/peloton,jessesleeping/iso_peloton,vittvolt/peloton,phisiart/peloton-p3,malin1993ml/peloton,cmu-db/peloton,yingjunwu/peloton,apavlo/peloton,ShuxinLin/peloton,phisiart/peloton-p3,seojungmin/peloton,seojungmin/peloton,eric-haibin-lin/peloton-1,haojin2/peloton,jessesleeping/iso_peloton,PauloAmora/peloton,seojungmin/peloton,seojungmin/peloton,malin1993ml/peloton,PauloAmora/peloton,AllisonWang/peloton,eric-haibin-lin/peloton-1,apavlo/peloton,prashasthip/peloton,eric-haibin-lin/peloton-1,eric-haibin-lin/peloton-1,vittvolt/15721-peloton,vittvolt/peloton,vittvolt/peloton