使用键对象名称查询

Question

在postgresql中我有一列是JSON类型，我有以下数据：

requests.get()

对于这个示例数据，我需要从基中提取数据到键名“ row1”和“ row2”。

我已经尝试了以下句子，但没有成功：

["row1", {
    "date": "05/30/2019",
    "name": "JOSH",
    "discount": "160.00"
}, {
    "date": "04/30/2019",
    "name": "JOSH",
    "discount": "170.00"
}, {
    "date": "03/30/2019",
    "name": "JOSH",
    "discount": "79.00"
}, "row2", {
    "date": "05/30/2019",
    "name": "MARIO",
    "discount": "110.00"
}, {
    "date": "04/30/2019",
    "name": "MARIO",
    "discount": "101.00"
}, {
    "date": "03/30/2019",
    "name": "MARIO",
    "discount": "98.00"
}]

现在总是显示空结果，例如，我需要提取'row1'

select data->>'row1' from discounts;

SELECT *
FROM   discounts
WHERE  json_arr_record_keys(data->'row1');

SELECT *
FROM   discounts
WHERE  EXISTS (
   SELECT 1
   FROM   json_array_elements(data->'row1') elem

   );