如何在mysql表中搜索json数组字段中的字段？

Question

我有一个带有 JSON 数组字段的表， 我想要一个基于此字段从另一个表返回结果的查询

table_a

+----+-------------+
| id | interestIds |
+----+-------------+
|  1 | [1, 2, 6, 7]|
+----+-------------+

table_b

+----+-------------+
| id | country     |
+----+-------------+
|  1 | Ghana       |
|  2 | Grenada     |
|  3 | Jordan      |
|  4 | Latvia      |
|  5 | Malawi      |
|  6 | Mexico      |
|  7 | Moldova     |
+----+-------------+

我想要像这样的查询

select * from table_b where id in (select interestIds from table_a where id = 1)

Answer 1

你可以使用json_search():

select b.*
from table_b
where exists (
    select 1 from table_a a where json_search(a.interestIds, 'one', b.id) is not null
)