Question

在我的表中，我有一个jsonb类型的列。示例jsonb数据：

{
   "id": "1", 
   "customer":[{"id": "1", "isPosted": "false"},{"id": "2","isPosted": "false"}]
}

是否可以将名为isPosted的所有元素更新为“true”？

Answer 1

你可以在这里使用猴子黑客 - 替换值并将结果用作jsonb：

t=# with c(j) as (values('{"id": "1", "customer":[{"id": "1", "isPosted": "false"},{"id": "2","isPosted": "false"}]} '::jsonb))
select *,replace(j::text,'"isPosted": "false"','"isPosted": "true"')::jsonb from c;
-[ RECORD 1 ]------------------------------------------------------------------------------------------
j       | {"id": "1", "customer": [{"id": "1", "isPosted": "false"}, {"id": "2", "isPosted": "false"}]}
replace | {"id": "1", "customer": [{"id": "1", "isPosted": "true"}, {"id": "2", "isPosted": "true"}]}

最后你can do it the right way：

t=# with c(j) as (values('{"id": "1", "customer":[{"id": "1", "isPosted": "false"},{"id": "2","isPosted": "false"}]} '::jsonb))
, n as (select jsonb_set(e,'{isPosted}'::text[],'true'),j from c, jsonb_array_elements(j->'customer') with ordinality a (e,o))
select jsonb_set(j,'{customer}'::text[],jsonb_agg(jsonb_set)) from n group by j;
                                        jsonb_set
-----------------------------------------------------------------------------------------
 {"id": "1", "customer": [{"id": "1", "isPosted": true}, {"id": "2", "isPosted": true}]}
(1 row)

在json postgresql中更新数组的所有元素

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