fix(explore): missing select when groupby without metrics (#12890)
fix(explore): missing select when groupby without metrics (#12890)


apache/incubator-superset,airbnb/caravel,airbnb/caravel,mistercrunch/panoramix,zhouyao1994/incubator-superset,apache/incubator-superset,mistercrunch/panoramix,zhouyao1994/incubator-superset,zhouyao1994/incubator-superset,mistercrunch/panoramix,zhouyao1994/incubator-superset,apache/incubator-superset,mistercrunch/panoramix,zhouyao1994/incubator-superset,apache/incubator-superset,airbnb/caravel,airbnb/caravel,apache/incubator-superset