<code>/* 1 */{ "_id" : ObjectId("55e542cd7f8b9aca2b8b4568"), "game_id" : 1103, "tags" : [ { "tag_id" : 10, "name" : "西游", "rank" : 10, }, { "tag_id" : 123, "name" : "网游", "rank" : 1, }, ], "time_sort" : 1435306}/* 2 */{ "_id" : ObjectId("55dd8fe67f8b9a25528b64f7"), "game_id" : 6408, "tags" : [ { "tag_id" : 28, "name" : "白领最爱", "rank" : 20, }, { "tag_id" : 123, "name" : "网游", "rank" : 2, }, ], "time_sort" : 1411574}/* 3 */{ "_id" : ObjectId("55dd91197f8b9a25528b9585"), "game_id" : 18498, "tags" : [ { "tag_id" : 19, "name" : "回合制", "pc_rank" : 120, }, { "tag_id" : 123, "name" : "网游", "rank" : 3, }, ], "time_sort" : 1437385}</code>
现在只想通过 网游标签的rank排序，语句应该怎么写
回复内容：
<code>/* 1 */{ "_id" : ObjectId("55e542cd7f8b9aca2b8b4568"), "game_id" : 1103, "tags" : [ { "tag_id" : 10, "name" : "西游", "rank" : 10, }, { "tag_id" : 123, "name" : "网游", "rank" : 1, }, ], "time_sort" : 1435306}/* 2 */{ "_id" : ObjectId("55dd8fe67f8b9a25528b64f7"), "game_id" : 6408, "tags" : [ { "tag_id" : 28, "name" : "白领最爱", "rank" : 20, }, { "tag_id" : 123, "name" : "网游", "rank" : 2, }, ], "time_sort" : 1411574}/* 3 */{ "_id" : ObjectId("55dd91197f8b9a25528b9585"), "game_id" : 18498, "tags" : [ <strong style="color:transparent">本&文来源gao@daima#com搞(%代@#码网@</strong><textarea>搞gaodaima代码</textarea>{ "tag_id" : 19, "name" : "回合制", "pc_rank" : 120, }, { "tag_id" : 123, "name" : "网游", "rank" : 3, }, ], "time_sort" : 1437385}</code>
现在只想通过 网游标签的rank排序，语句应该怎么写
管道查询然后用unwind打撒tags，再排序
<code>"tags" : [ { "tag_id" : 28, "name" : "白领最爱", "rank" : 20, }, { "tag_id" : 123, "name" : "网游", "rank" : 2, }, ],</code>
tags数组里面的两个元素都有rank字段，你要根据第一个rank排序还是第二个rank排序？
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转载请注明原文链接：Mongodb 根据子文档的某个特定字段排序的问题
转载请注明原文链接：Mongodb 根据子文档的某个特定字段排序的问题
