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we21x
V2EX  ›  Python

如何在 tortoise-orm 的 JSON 字段中查找含有指定值的项?

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  •   we21x · Apr 6, 2021 · 2947 views
    This topic created in 1847 days ago, the information mentioned may be changed or developed.

    比如现在有如下表:

    class Foo(models.Model):
        id = fields.IntField(pk=True)
        tags = fields.JSONField(default=['aa', 'bb', 'cc'])
    

    想查询 tags 内含 bb 的数据项,该怎么写呢? 官方文档里面有个filtering感觉比较合适,但是这样写:

    bb_tags = await Foo.filter(tags__in=['bb'])
    

    并找不到数据。 另一个思路是直接写原始的 SQL Query:

    async with in_transaction() as conn:
        r = await conn.execute_query('SELECT tags FROM Foo')
    

    然而我并不会写...

    jenlors
        1
    jenlors  
       Apr 6, 2021   ❤️ 1
    we21x
        2
    we21x  
    OP
       Apr 6, 2021
    @long2ice 感谢!
    we21x
        3
    we21x  
    OP
       Apr 6, 2021
    @long2ice 大佬能给个例子吗?我没有 SQL 基础调了好半天也没看懂
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