[英]Extract sub JSON with keys and values in MYSQL
I have a table with a JSON TYPE column like this:我有一个带有 JSON TYPE 列的表,如下所示:
id ID | json_info json_info | date日期 |
---|---|---|
1. 1. | {"Ccclaptop_model": {"value": "asus", "price": "2122"}, "laptop_ram": {"value": "6", "price": "122"}, "laptop_mouse_model": {"value": "logic", "price": "30"} , "laptop_keys_model": {"value": "USA", "price": "10"}} {“Ccclaptop_model”:{“value”:“asus”,“price”:“2122”},“laptop_ram”:{“value”:“6”,“price”:“122”},“laptop_mouse_model”:{ “价值”:“逻辑”,“价格”:“30”},“laptop_keys_model”:{“价值”:“美国”,“价格”:“10”}} | 2020-02-02 2020-02-02 |
And I'd like to have a query that extracts a sub-JSON with his key value, like this:我想要一个查询,用他的键值提取一个子 JSON,如下所示:
id ID | json_info json_info | date日期 |
---|---|---|
1. 1. | {"laptop_mouse_model": {"value": "logic", "price": "30"} , "laptop_keys_model": {"value": "USA", "price": "10"}} {“laptop_mouse_model”:{“value”:“logic”,“price”:“30”},“laptop_keys_model”:{“value”:“USA”,“price”:“10”}} | 2020-02-02 2020-02-02 |
I have tried JSON_EXTRACT我试过 JSON_EXTRACT
SELECT id,
JSON_EXTRACT(json_info, '$.laptop_mouse_model', '$.laptop_keys_model' ) AS store_id
FROM feature_data WHERE date = '2020-02-02';
but just return a JSON array without keys, like this:但只返回一个没有键的 JSON 数组,如下所示:
id ID | json_info json_info | date日期 |
---|---|---|
1. 1. | [{"value": "logic", "price": "30"} ,{"value": "USA", "price": "10"}] [{“价值”:“逻辑”,“价格”:“30”},{“价值”:“美国”,“价格”:“10”}] | 2020-02-02 2020-02-02 |
Does somebody know if exists a function that I could use?有人知道是否存在我可以使用的功能吗?
您可以使用JSON_OBJECT
将结果组合为 json,例如:
SELECT id,JSON_OBJECT('laptop_mouse_model',JSON_EXTRACT(json_info, '$.laptop_mouse_model'),'laptop_keys_model',JSON_EXTRACT(json_info, '$.laptop_keys_model')) AS store_id FROM feature_data WHERE date = '2020-02-02';
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