I think you misread my message. What I want is for the subscript-version:('{"key":"value"}'::jsonb)['key'] to return:┌──────────┐
│ ?column? │
├──────────┤
│ value │
└──────────┘
instead of┌─────────┐
│ jsonb │
├─────────┤
│ "value" │
└─────────
A given syntax/operator can only return one thing so what you want is fundamentally not possible.
David J.
