build
EXPLAIN SELECT 1
----
explain
 ├── columns: info:2(string)
 ├── stats: [rows=10]
 └── project
      ├── columns: "?column?":1(int!null)
      ├── cardinality: [1 - 1]
      ├── stats: [rows=1]
      ├── key: ()
      ├── fd: ()-->(1)
      ├── values
      │    ├── cardinality: [1 - 1]
      │    ├── stats: [rows=1]
      │    ├── key: ()
      │    └── () [type=tuple]
      └── projections
           └── 1 [as="?column?":1, type=int]

build
SHOW TRACE FOR SESSION
----
show-trace-for-session &{TRACE false [1 2 3 4 5 6 7]}
 ├── columns: timestamp:1(timestamptz) age:2(interval) message:3(string) tag:4(string) location:5(string) operation:6(string) span:7(int)
 └── stats: [rows=10]
