On Tue, 2024-04-09 at 09:31 +0000, PG Doc comments form wrote: > Page: https://www.postgresql.org/docs/16/datatype-json.html > > Using subscripts with square brackets is not supported, one must use -> or > #> operators > The given examples result in error: > > SELECT ('{"a": 1}'::jsonb)['a']; > > -- Extract nested object value by key path > SELECT ('{"a": {"b": {"c": 1}}}'::jsonb)['a']['b']['c']; > > -- Extract array element by index > SELECT ('[1, "2", null]'::jsonb)[1];
You must be using an old PostgreSQL version where that is not yet supported. Yours, Laurenz Albe
