No output. Declared the input/output is in the shape table, list, tree. Like when a http response say is json, text, csv, etc. This information unlock certain

No output. Declared the input/output is in the shape table, list, tree. Like when a http response say is json, text, csv, etc. This information unlock certain capabilities and will allow to provide efficient execution of queries. If psql (postgresql terminal cli) declare their data is in the "tables" shape then it could take the |where name = "" query itself and execute it instead of output all the rows...