如何将多行从 JSON 结构插入 MySQL 列

Question

我需要在一个 mysql 列中插入多个 json 值。 这里我有一个名为 client 的表

query = ' INSERT INTO client (user_id,client_id,tenant_id) values ?'
let queryClient = []
queryClient.push(clientData.user_id)
queryClient.push(clientData.client_id);
queryClient.push(clientData.tenant_id);

在此之前，我将req.body 分配给clientData

这里是mysql数据库的连接

var queryMapClientIn = mysql.format(query, [queryClient])
const newMapClient = await conPool.query(queryMapClientIn, function (err, result) {
  if (err) throw err;
  console.log("Number of records inserted: " + result.affectedRows);
});

这是代码，json数据是：

{
    "user_id" : 101,
    "client_id": 999,
    "tenant_id" : 1,
    "additionalClient" : [
        {"user_id" : 130},
        {"user_id" : 131}
    ]
}

这是 json 数据，我需要将多个 user_id 推送到 sql 表上的 user_id 列中。可以知道如何在这张表上插入多个user_id吗？

Answer 1

您可以创建一个二维数组来插入多行。

let clientData = {
    "user_id" : 101,
    "client_id": 999,
    "tenant_id" : 1,
    "additionalClient" : [
        {"user_id" : 130},
        {"user_id" : 131}
    ]
};
let queryClient = [[clientData.user_id, clientData.client_id, clientData.tenant_id]];
if (clientData.additionalClient) {
    let additionalClients = clientData.additionalClient.map(({user_id}) => [user_id, clientData.client_id, clientData.tenant_id]);
    queryClient = queryClient.concat(additionalClients);
}

let query = 'INSERT INTO client (user_id,client_id,tenant_id) values ?';
const newMapClient = await conPool.query(query, queryClient, function (err, result) {
  if (err) throw err;
  console.log("Number of records inserted: " + result.affectedRows);
});