我有一个带有名为"available_quantity"的 jsonb 列的捆绑选项卡。
[{ "面额": "100", "数量": "20"}, { "面额": ">1000", "数量": "19"}]
现在,我想查询数量小于 50 的所有记录。
我尝试了这个查询,
Bundle.where("(available_quantity->>'quantity'(::数字<50"(
但这返回空的关系。
我该怎么做?
图式
Table "offer_service.bundles"
Column | Type | Collation |
Nullable | Default
-----------------------+-----------------------------+-----------+----
------+--------------------------------------------------------
id | bigint | | not
null | nextval('offer_service.bundles_id_seq'::regclass)
project_id | bigint | |
|
item_type | character varying | |
|
item_id | bigint | |
|
status | integer | | not
null | 0
created_at | timestamp without time zone | | not
null |
updated_at | timestamp without time zone | | not
null |
denomination_quantity | jsonb | |
|
deleted_at | timestamp without time zone | |
|
available_quantity | jsonb | |
|
示例数据:
id: 2586, project_id: 3, item_type: "GiftCard", item_id: 659, status:
"activated", created_at: "2020-05-18 09:38:54", updated_at: "2020-05-
28 13:25:29", denomination_quantity: {"100"=>200, "1000"=>200},
deleted_at: nil, available_quantity: [{"quantity"=>16,
"denomination"=>"100"}, {"quantity"=>20, "denomination"=>1000}]
希望我们必须在这里使用子查询。
Bundle.select("*").from(Bundle.select("*, jsonb_array_elements(available_quantity) as aq")).where("(aq ->> 'quantity')::numeric <= 50").distinct
欢迎对上述查询进行重构的建议!