How to get elements from Json array in PostgreSQL

Question

I have searched quite much on this and still unanswerable. I\'m using PostgreSQL. Column name is \"sections\" and column type is json[] in below example.

My column looks

Answer 1

And also, if there was a key value map data in array:

select each_data -> 'value' as value3 
from t cross join jsonb_array_elements(t.sections -> 'attributes') each_attribute 
where each_attribute -> 'key' = '"attrkey3"'

I am mentioning this because the great answer also provided a perfect solution for my case. By the way, also be aware of jsonb_array.. method for jsonb type attribute.