用postgresql同步函数node.js？

Question

我有一些问题管理异步功能。这里是我的代码：

var query = client.query("select * from usuario"); 

    query.on('row', function(user) { 
    var queryInterest = client.query("select interes.nombre from interes inner join relacioniu on relacioniu.idinteres=interes.id where relacioniu.idusuario = '"+user.id+"'"); 
    queryInterest.on('row',function(row) { 
      user.interest = row; 
      console.log("user added"); 
     }); 
    users.push(user); 
    }); 
// After all data is returned, close connection and return results 
    query.on('end', function() { 
     done(); 
     console.log("finish"); 
     return res.json(users); 
    }); 

在执行queryInterest之前，users数组推送用户，所以用户的兴趣永远不会被添加。我该如何解决这个问题？

谢谢你这么多

Answer 1

var query = client.query("select * from usuario"); 

query.on('row', function(user) { 
var queryInterest = client.query("select interes.nombre from interes inner join relacioniu on relacioniu.idinteres=interes.id where relacioniu.idusuario = '"+user.id+"'"); 
queryInterest.on('row',function(row) { 
     user.interest = row; 
     users.push(user); // Moved it here; this is async, too. 
    }); 
});