查询基于文档数组中的条件

Question

db.products

{"product":"iphone",
 "people_have_this":[001, 002, 003, 004]} //objectID
{"product":"samsung",
 "people_have_this":[001, 004]}
{"product":"nokia",
 "people_have_this":[001, 002, 003]}

db.users

{"name":"john",
 "id":"001"}
{"name":"peter",
 "id":"002"}

如何获得John的产品清单？我的期望是什么

[{"product":"iphone",
 "people_have_this":[001, 002, 003, 004]},
{"product":"samsung",
 "people_have_this":[001, 004]},
{"product":"nokia",
 "people_have_this":[001, 002, 003]}]

Answer 1

如果您知道John的id，那么这是一个简单的查询......

db.products.find( { people_have_this: "001" } );