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postgresql - Postgres: How to convert a json string to text?

Json value may consist of a string value. eg.:

postgres=# SELECT to_json('Some "text"'::TEXT);
     to_json
-----------------
 "Some "text""

How can I extract that string as a postgres text value?

::TEXT doesn't work. It returns quoted json, not the original string:

postgres=# SELECT to_json('Some "text"'::TEXT)::TEXT;
     to_json
-----------------
 "Some "text""

Thanks.

P.S. I'm using PostgreSQL 9.3

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In 9.4.4 using the #>> operator works for me:

select to_json('test'::text) #>> '{}';

To use with a table column:

select jsoncol #>> '{}' from mytable;

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