我正在使用mysql2/promise来运行一些sql查询。这是我的查询:
requests = await conn.execute(
'SELECT * FROM friend_requests WHERE (requester=? AND acceptor=?) OR (requester=? AND acceptor=?)',
[ 1, 2, 2, 1]
);
当我运行此命令时，我得到以下结果:
{
"message": [
[],
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"_clientEncoding": "utf8",
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"_orgTableLength": 15,
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"_orgNameLength": 7,
"_orgNameStart": 222,
"characterSet": 63,
"encoding": "binary",
"name": "created",
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"flags": 1152,
"decimals": 0
}
]
]
}
这是什么？我想我会得到类似 requests[0].column_name 的东西。我的查询是否错误？
最佳答案
事实证明，如果有 0 个结果，await conn.execute 只会返回表的字段。
因此，您必须将 rows 指定为变量才能获取空的 rows 数组，如下所示:
const [rows, fields] = await conn.execute(
'SELECT * FROM friend_requests WHERE (requester=? AND acceptor=?) OR (requester=? AND acceptor=?)',
[ 1, 2, 2, 1]
);
现在，rows 将包含查询中返回的行，fields 是一个字段数组(问题中返回的缓冲区)。
关于mysql - 为什么MySQL2执行命令在Nodejs中返回一个缓冲区，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/63878206/