[hotfix] grouping by grain, filtering on raw expression
[hotfix] grouping by grain, filtering on raw expression

robert-digit/superset,nekia/incubator-superset-dev,mistercrunch/panoramix,robert-digit/superset,wbsljh/caravel,zhouyao1994/incubator-superset,dmigo/incubator-superset,FrederichCheng/incubator-superset,giaosudau/caravel,SingTel-DataCo/incubator-superset,francisliyy/caravel-aidp,robert-digit/superset,SingTel-DataCo/incubator-superset,mistercrunch/panoramix,woel0007/caravel,apache/incubator-superset,tienhv/caravel,apache/incubator-superset,timifasubaa/incubator-superset,timifasubaa/incubator-superset,georgeke/caravel,wbsljh/caravel,SingTel-DataCo/incubator-superset,francisliyy/caravel-aidp,ArijanaBrlek/superset,alanmcruickshank/superset-dev,airbnb/caravel,robert-digit/superset,airbnb/superset,wbsljh/caravel,dmigo/incubator-superset,ArijanaBrlek/superset,asdf2014/superset,airbnb/superset,ArijanaBrlek/superset,francisliyy/caravel-aidp,georgeke/caravel,wbsljh/caravel-aidp,apache/incubator-superset,woel0007/caravel,jeromecn/caravel_viz_full,dmigo/incubator-superset,thebucknerlife/caravel,nekia/incubator-superset-dev,tienhv/caravel,apache/incubator-superset,thebucknerlife/caravel,nekia/incubator-superset-dev,BRD-CD/superset,FrederichCheng/incubator-superset,alanmcruickshank/superset-dev,tienhv/caravel,massgov/incubator-superset,mistercrunch/panoramix,woel0007/caravel,georgeke/caravel,timifasubaa/incubator-superset,zhouyao1994/incubator-superset,asdf2014/superset,dmigo/incubator-superset,thebucknerlife/caravel,asdf2014/superset,timifasubaa/incubator-superset,BRD-CD/superset,apache/incubator-superset,jeromecn/caravel_viz_full,airbnb/caravel,alanmcruickshank/superset-dev,wbsljh/caravel-aidp,alanmcruickshank/superset-dev,giaosudau/caravel,massgov/incubator-superset,zhouyao1994/incubator-superset,thebucknerlife/caravel,airbnb/superset,tienhv/caravel,asdf2014/superset,FrederichCheng/incubator-superset,mistercrunch/panoramix,wbsljh/caravel-aidp,giaosudau/caravel,BRD-CD/superset,BRD-CD/superset,massgov/incubator-superset,wbsljh/caravel,FrederichCheng/incubator-superset,georgeke/caravel,massgov/incubator-superset,francisliyy/caravel-aidp,SingTel-DataCo/incubator-superset,airbnb/superset,woel0007/caravel,giaosudau/caravel,zhouyao1994/incubator-superset,jeromecn/caravel_viz_full,airbnb/caravel,nekia/incubator-superset-dev,wbsljh/caravel-aidp,ArijanaBrlek/superset,airbnb/caravel,jeromecn/caravel_viz_full,zhouyao1994/incubator-superset