add support for decimal comparison in mapping op expr
add support for decimal comparison in mapping op expr


Former-commit-id: 4259289f5539af46440c71023a69f85c76bfccfe
haojin2/peloton,eric-haibin-lin/peloton-1,ShuxinLin/peloton,cmu-db/peloton,yingjunwu/peloton,AllisonWang/peloton,haojin2/peloton,AngLi-Leon/peloton,haojin2/peloton,phisiart/peloton-p3,yingjunwu/peloton,jessesleeping/iso_peloton,apavlo/peloton,AngLi-Leon/peloton,vittvolt/peloton,seojungmin/peloton,seojungmin/peloton,ShuxinLin/peloton,vittvolt/peloton,vittvolt/peloton,vittvolt/15721-peloton,phisiart/peloton-p3,AngLi-Leon/peloton,malin1993ml/peloton,malin1993ml/peloton,prashasthip/peloton,eric-haibin-lin/peloton-1,vittvolt/peloton,vittvolt/15721-peloton,haojin2/peloton,cmu-db/peloton,ShuxinLin/peloton,vittvolt/peloton,eric-haibin-lin/peloton-1,AllisonWang/peloton,cmu-db/peloton,cmu-db/peloton,yingjunwu/peloton,AllisonWang/peloton,malin1993ml/peloton,seojungmin/peloton,malin1993ml/peloton,prashasthip/peloton,seojungmin/peloton,yingjunwu/peloton,vittvolt/15721-peloton,wangziqi2016/peloton,jessesleeping/iso_peloton,ShuxinLin/peloton,yingjunwu/peloton,ShuxinLin/peloton,eric-haibin-lin/peloton-1,phisiart/peloton-p3,AngLi-Leon/peloton,PauloAmora/peloton,yingjunwu/peloton,PauloAmora/peloton,AllisonWang/peloton,phisiart/peloton-p3,wangziqi2016/peloton,wangziqi2016/peloton,prashasthip/peloton,prashasthip/peloton,jessesleeping/iso_peloton,jessesleeping/iso_peloton,ShuxinLin/peloton,jessesleeping/iso_peloton,jessesleeping/iso_peloton,apavlo/peloton,haojin2/peloton,eric-haibin-lin/peloton-1,PauloAmora/peloton,malin1993ml/peloton,vittvolt/15721-peloton,vittvolt/15721-peloton,wangziqi2016/peloton,PauloAmora/peloton,AngLi-Leon/peloton,apavlo/peloton,cmu-db/peloton,wangziqi2016/peloton,prashasthip/peloton,malin1993ml/peloton,AllisonWang/peloton,AngLi-Leon/peloton,apavlo/peloton,apavlo/peloton,phisiart/peloton-p3,prashasthip/peloton,eric-haibin-lin/peloton-1,haojin2/peloton,vittvolt/peloton,cmu-db/peloton,PauloAmora/peloton,vittvolt/15721-peloton,wangziqi2016/peloton,AllisonWang/peloton,phisiart/peloton-p3,PauloAmora/peloton,apavlo/peloton,seojungmin/peloton,seojungmin/peloton,jessesleeping/iso_peloton