Dear all:
I have a reasonable need, but I can't find how to deal with it on es
official docs and books, is anyone know, please teach it to me! thank you!
I have a large set of docs, which hold a lot of fields, such as:
uid2 = {
"id": 1404999597,
"idstr": "1404999597",
"class": 1,
"screen_name": "",
"name": "",
"province": "11",
"city": "1000",
"location": "北京",
"description": "在主流与非主流之间徘徊",
"url": "",
"profile_image_url": "http://tp2.sinaimg.cn/1404999597/50/5642385629/0",
"profile_url": "u/1404999597",
"domain": "",
"weihao": "",
"gender": "f",
"followers_count": 1030710,
"friends_count": 272,
"statuses_count": 1519,
"favourites_count": 90,
"created_at": "Wed Mar 23 23:59:40 +0800 2011",
"following": false,
"allow_all_act_msg": false,
"geo_enabled": false,
"verified": true,
"verified_type": 0,
"remark": "",
"status": {
"created_at": "Tue Jul 01 13:17:55 +0800 2014",
"id": 3727513249206064,
"mid": "3727513249206064",
"idstr": "3727513249206064",
"text": "听到她的声音，我更相信她和荷西在天堂，依旧幸福着。 //@东方尔雅:现在这种纯真的爱情还好找吗？ //@晓玲-有话说:[心]",
"source": "<a href="http://app.weibo.com/t/feed/9ksdit"
rel="nofollow">iPhone客户端",
"favorited": false,
"truncated": false,
"in_reply_to_status_id": "",
"in_reply_to_user_id": "",
"in_reply_to_screen_name": "",
"pic_urls": [],
"geo": null,
"reposts_count": 0,
"comments_count": 0,
"attitudes_count": 0,
"mlevel": 0,
"visible": {
"type": 0,
"list_id": 0
},
"darwin_tags": []
},
"ptype": 1,
"allow_all_comment": true,
"avatar_large": "http://tp2.sinaimg.cn/1404999597/180/5642385629/0",
"avatar_hd": "http://tp2.sinaimg.cn/1404999597/180/5642385629/0",
"verified_reason": "电视台主持人梦桐",
"verified_trade": "",
"verified_reason_url": "",
"verified_source": "",
"verified_source_url": "",
"follow_me": false,
"online_status": 0,
"bi_followers_count": 167,
"lang": "zh-cn",
"star": 0,
"mbtype": 0,
"mbrank": 0,
"block_word": 0,
"block_app": 0,
"ability_tags": "主持人",
"worldcup_guess": 0
}
this is a user info. If I want analysis the gender distribution of all of
users whose live in "city": "1000"(1000 is a city code), I don't need other
field except "city" and "gender", How can I exclude these meaningless field
before they are returned. Because there are a lots of doc, If transmit the
entire doc will wast many time and bandwidth, and I have to trim the
additional information in myself program. so, is there a method can deal
with problem for me? thank you.
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