您好我计划在我的项目中使用elasticsearch,但我是初学者。我的文档看起来像这样
{
"title":"Investment secrets",
"body":"What they don't tell you ...",
"tags":[
"shares",
"equities"
],
"comments":[
{
"name":"Mary Brown",
"comment":"Lies, lies, lies",
"age":42,
"stars":1,
"date":"2014-10-16",
"priority":[
{
"prior":1,
"some fields":1
},
{
"prior":3,
"some fields":3
}
]
},
{
"name":"John Smith",
"comment":"You're making it up!",
"age":28,
"stars":2,
"date":"2014-10-16",
"priority":[
{
"prior":2,
"some fields":2
}
]
}
]
}
我如何获得结果作为标题,正文标记和coments字段,其中日期是最大值(如果两个日期相同)和comments.priority字段,其中先前是min为评论,其中日期是最大值?它的位置?谢谢你的帮助
答案 0 :(得分:0)
private void timeout(RoutingContext ctx) {
long tid = ctx.vertx().setTimer(5000, t -> {
ctx.response().putHeader("location","/logout").setStatusCode(302).end();
});
ctx.addBodyEndHandler(v -> ctx.vertx().cancelTimer(tid));
}
如何仅返回John Smith的名字?
ok解决方案是“inner_hits”:{}
但下一个问题是如何获取日期为最大值的注释,sql中的e.q
从表中选择*,其中comments.date =(从表中选择max(comments.date))