plpg sql seelect pased on item in json code example

Example 1: postgres json to string

SELECT CAST( json_column AS TEXT ) FROM table
or
SELECT json_column::TEXT FROM table

Example 2: json array to string in postgresql

SELECT string_agg(trim(tdata::text, '"'), ', ') from jsonb_array_elements(CAST('[1 , 2]' as jsonb)) tdata