github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/sql/opt/memo/testdata/logprops/rownumber (about)

     1  exec-ddl
     2  CREATE TABLE xy (x INT PRIMARY KEY, y INT)
     3  ----
     4  
     5  build
     6  SELECT * FROM xy WITH ORDINALITY
     7  ----
     8  ordinality
     9   ├── columns: x:1(int!null) y:2(int) ordinality:3(int!null)
    10   ├── key: (1)
    11   ├── fd: (1)-->(2,3), (3)-->(1,2)
    12   ├── prune: (1,2)
    13   └── scan xy
    14        ├── columns: x:1(int!null) y:2(int)
    15        ├── key: (1)
    16        ├── fd: (1)-->(2)
    17        ├── prune: (1,2)
    18        └── interesting orderings: (+1)