2017-02-17 56 views

回答

6

UPDATE使用delete (-) and concatenate (||) operators,例如:

create table example(id int primary key, js jsonb); 
insert into example values 
    (1, '{"nme": "test"}'), 
    (2, '{"nme": "second test"}'); 

update example 
set js = js - 'nme' || jsonb_build_object('name', js->'nme') 
returning *; 

id |   js    
----+------------------------- 
    1 | {"name": "test"} 
    2 | {"name": "second test"} 
(2 rows)