带有节点的复杂SQL查询-MySQL

Question

我在使用nodeJS和随npm添加的node-mysql packe对我的MySQL数据库运行以下SQL查询时遇到问题。

INSERT INTO locations (locationID,name,latitude,longitude)
SELECT '214777725','Bryans Road,
Maryland','38.628055556','-77.081666667'
FROM dual WHERE NOT EXISTS
(SELECT * FROM locations WHERE locationID = '214777725')

我尝试了以下代码：

var arrValues = [ -12.9747, -38.4767, 213287181, 'Salvador, Brazil' ];
var arrNames = [ 'latitude', 'longitude', 'locationID', 'name' ];
var locationID = "214777725";
if(imageData["locationID"] != null) {
    var query = "INSERT INTO locations ? ";
    query = query + " SELECT (?)";
    query = query + " FROM dual WHERE NOT EXISTS";
    query = query + " (SELECT * FROM locations WHERE locationID = ?)";
    console.log(query);
    connection.query(query, [arrNames,arrValues,locationID], function(err,res)
    {
      if(err)
      {
        console.log(err);
      }
      else
      {
        console.log("Insert-Success: " +id);
      }
    });
}

运行此控制台，将写入以下错误：

{
    code: 'ER_PARSE_ERROR',
    errno: 1064,
    sqlState: '42000',
    index: 0 
}

希望有人能帮忙。

Answer 1

看来您需要使用.toString（）;。 对您的阵列起作用。

connection.query(query, [arrNames.toString(),arrValues.toString(),locationID], function(err,res)
{ ...