mongo索引问题

Question

我在后台查看数据库某个表的索引是存在多个

我重新建了一个表，有没有办法把全部的索引都添加上

Answer 1

可试：

var indexes = db.user.getIndexes();

indexes.forEach(function(index){
    delete index.v;
    delete index.ns;

    var options = [];
    for (var option in index) {
        if (option != 'key') {
            options.push(index['option']);
        }
    }
   db.usertest.createIndex(index.key, options);
});