Rails Postgres - Jsonb Column Query



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!

最新更新