app.put('/edit', 로그인했니,function(요청, 응답){
var id= parseInt(요청.body.id);
var title=요청.body.title;
var content=요청.body.content;
var user_id=요청.user[0].user_id;
var gp= 'admin'; ->group
var sql= 'UPDATE post INNER JOIN login ON login.id=post.numberid SET title=?, content=? WHERE (login.user_id=? AND post.id=?) || (login.gp=? AND post.id=?)';
connection.query(sql,[title,content,user_id,id,gp,id], function(err,result){
WHERE (login.user_id=? AND post.id=?) || (login.gp=? AND post.id=?)'; -> 이거라고 생각하는데 조건을 어떻게 줘야할까요