Fields
- name: string
- sql_type: string
format_type, for the doc comment- base: string
- what
jai_type_oftakes: "int8", "text[]", "json", or "enum" / "enum[]" - enum_key: string
- the
Catalog_Enum.keyof an enum column or enum array - nullable: bool
- primary_key: bool
- has_default: bool
- a default, identity or generated: an insert may leave it out
- generated: bool
- always generated: an insert may not give it a value