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

     1  build
     2  EXPLAIN SELECT 1
     3  ----
     4  explain
     5   ├── columns: tree:2(string) field:3(string) description:4(string)
     6   ├── stats: [rows=10]
     7   └── project
     8        ├── columns: "?column?":1(int!null)
     9        ├── cardinality: [1 - 1]
    10        ├── stats: [rows=1]
    11        ├── key: ()
    12        ├── fd: ()-->(1)
    13        ├── values
    14        │    ├── cardinality: [1 - 1]
    15        │    ├── stats: [rows=1]
    16        │    ├── key: ()
    17        │    └── () [type=tuple]
    18        └── projections
    19             └── 1 [as="?column?":1, type=int]
    20  
    21  build
    22  SHOW TRACE FOR SESSION
    23  ----
    24  show-trace-for-session &{TRACE false [1 2 3 4 5 6 7]}
    25   ├── columns: timestamp:1(timestamptz) age:2(interval) message:3(string) tag:4(string) location:5(string) operation:6(string) span:7(int)
    26   └── stats: [rows=10]