Evergreen SQL JSON join attempt

108         from => {
109             sasum => {
110                 sdist => {
111                     filter => {
112                         summary_method => {
113                             "+sasum" => "summary_text"
114                         }
115                     },
116                     join => {
117                         ssub => {},
118                         sstr => {
119                             join => {sitem => {}}
120                         },
121                     }
122                 }
123             }
124         },