I want to update with Node+MySQL using a placeholder.

const checksql="SELECT* FROM users WHERE name=?";
const checkname="SELECT status FROM users WHERE name=?";

const updatesql="UPDATE users SET?WHERE?";

if(req.body.begin_button){
    var name_checked = wait query(checksql, {name:req.body.input_name});
    var status_checked = wait query(checkname, {name:req.body.input_name});

if(name_checked==0){
      var results=wait query(sql, {id:id, name:req.body.input_name, email:req.body.input_mail, start:now,status:1});
    } else {
      console.log("error");
    };
  }
  else if(req.body.finish_button){
    if(name_checked!=0){
      var results = wait query (updatesql, {end:now, status:0});
    } else {
      console.log("error");
    }
  }
  else if(req.body.start_button){
    if(status_checked==1){
      var results = wait query (updatesql, {restbegin:now, status:2});
    } else {
      console.log("error");
    };
  } else if (req.body.end_button) {
     if(status_checked==2){
        var results = wait query (updatesql, {restend:now, status:3});
     } else {
        console.log("error");
     };

  };