opt
SELECT * FROM information_schema.schemata WHERE SCHEMA_NAME='public'
----
select
 ├── columns: catalog_name:1(string) schema_name:2(string!null) default_character_set_name:3(string) sql_path:4(string)
 ├── stats: [rows=10, distinct(2)=1, null(2)=0]
 ├── cost: 20.02
 ├── fd: ()-->(2)
 ├── virtual-scan t.information_schema.schemata
 │    ├── columns: catalog_name:1(string) schema_name:2(string) default_character_set_name:3(string) sql_path:4(string)
 │    ├── stats: [rows=1000, distinct(2)=100, null(2)=0]
 │    └── cost: 10.01
 └── filters
      └── schema_name = 'public' [type=bool, outer=(2), constraints=(/2: [/'public' - /'public']; tight), fd=()-->(2)]
