how insert a new value in a jsonb postgresql array of integer

Question

I have in my table a column with type jsonb with this value

'[2,4]' 

how can I update my table to insert one or more values in this column?

tks

Answer 1

Use the || operator

select '[2,4]'::jsonb || '[5,6]';
   ?column?   
--------------
 [2, 4, 5, 6]