为jsonb现有密钥添加值并更新其他postgres

Question

How can I add values to jsonb key ? Example `

{"drivers": "15","updatedat":"someDate"}

after upd must be

{"drivers":"15,...,26","updatedat":"nowTime"}

updatedat inserted from node,so there is no problem,I can select value of derivers in node,add new and update,Is there other way make it with 1 query without using node?

Answer 1

If I understand your task correctly, you just need jsonb_set :

t=# select jsonb_set('{"drivers": "15","updatedat":"someDate"}'::jsonb, '{updatedate}'::text[],to_jsonb(now()));
                                          jsonb_set
----------------------------------------------------------------------------------------------
 {"drivers": "15", "updatedat": "someDate", "updatedate": "2018-05-29T15:49:41.772188+00:00"}
(1 row)

unless you have older version of course...

update to change drivers att value:

t=# with c(j) as (values('{"drivers": "15","updatedat":"someDate"}'::jsonb))
select jsonb_set(j,'{drivers}'::text[],to_jsonb(j->>'drivers'||',...,26')) from c;
                     jsonb_set
---------------------------------------------------
 {"drivers": "15,...,26", "updatedat": "someDate"}
(1 row)