Question

如何向jsonb键添加值？示例`

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

之后必须

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

updatedat从节点插入，所以没有问题，我可以选择节点中的派生值，添加新的和更新，还有其他方法使用1个查询而不使用节点吗？

Answer 1

如果我理解您的任务正确，您只需要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)

除非你有旧版本的课程......

更新以更改驱动程序值：

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)

将值添加到jsonb现有密钥并更新其他postgres

1 个答案: