我有一个选择查询,女巫返回了一个array_to_json对象。我想根据特定的键和值筛选选择的结果。
这是我的实际查询:
select jsonarray
from (
SELECT body.id_user,
array_to_json(array_agg(row_to_json(body))) as jsonarray
FROM (
SELECT id_user, name, value
FROM table_1
group by id_user, name, value
) body
group by body.id_user
) as test;
它返回很多这样的行:
[{"id_user": 1489, "name": "name 1", "value": "value aaaaaa"}, {"id_user": 1489, "name": "name 2", "value": "value babababab"}]
[{ "id_user": 1490, "name": "name 12", "value": "value aaaaaa" }, { "id_user": 1490, "name": "name 2", "value": "value babababab" }]
[ { "id_user": 1491, "name": "name 13", "value": "value aaaaaa" }, { "id_user": 1491, "name": "name 23", "value": "value uouououo" }]
好吧,我只希望将具有字段“ name”:“ name 2”,“ value”:“ value babababab”的行放入json ...我已经尝试过
select jsonarray->'name'
from (
....
) as test
where jsonarray->>'name'::text = 'name 2';
但是它什么也不返回。还有另一种查询方式?