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我有一个名为 context 的列:见下文
我想查询突出显示的部分 - 7efdfa8e2df075bd
我正在使用它,但它不起作用。JSON_EXTRACT_SCALAR(context,'$.id') 有 什么建议吗?
id位于内部device。
id
device
尝试JSON_EXTRACT_SCALAR(context,'$.device.id')
JSON_EXTRACT_SCALAR(context,'$.device.id')