最近经常用到mongodb，现把常用命令汇总如下：
1、创建集合
db.createCollection("modb_test")2、复制集合（同库复制）
1 db.modb_test.find().forEach(function(x){db.modb_test2.insert(x)})3、删除集合
1 db.modb_test2.drop()
4、查看一条
1 db.modb_test.findOne()
2
3 {
4 "_id" : "5cda9deeac91bb0001e3d582",
5 "username" : "igcptest103",
6 "phone" : "13820555567",
7 "create_time" : "2019-05-14 18:52:30",
8 "user_id" : "9b840357-6dc8-48c6-b2e1-081466bd93a8",
9 "realname" : "igcptest103",
10 "is_delete" : 0,
11 "site_info" : [
12 {
13 "pro_list" : [
14 {
15 "role_list" : [
16 "5cda9e25ac91bb0001e3d584"
17 ],
18 "pro_id" : "9cced61a0726b762781b199e"
19 },
20 {
21 "role_list" : [
22 "5cda9e25ac91bb0001e3d584"
23 ],
24 "pro_id" : "76faada2-3381-450c-bca4-4527b44a5b76"
25 },
26 {
27 "role_list" : [
28 "5cda9e25ac91bb0001e3d584"
29 ],
30 "pro_id" : "55439bed-de5a-4539-bee8-33c7ee97a7cc"
31 }
32 ],
33 "sys_role_id" : "5cda9e1aac91bb0001e3d583",
34 "site_id" : "5cc02b9e0726b7066e0d420b",
35 "company_type" : null,
36 "global_project_role_id" : "5cda9e36ac91bb0001e3d585",
37 "belong" : "2",
38 "company_id" : "5c67e745-618e-4e76-9202-b692c345c940",
39 "office_id" : "",
40 "is_valid" : 0,
41 "max_pro_num" : 33,
42 "join_pro_num" : 0
43 }
44 ],
45 "email" : "igcptest101@yiducloud.cn"
46 }
5、查看多条
db.modb_test.find().pretty()
6、向_id为5cda9deeac91bb0001e3d582的site_info的list中插入一条数据
1 db.modb_test.update({"_id":"5cda9deeac91bb0001e3d582"},{$push:{"site_info":{"site_id":"casdfweradc2238db9adbdcd"}}})
2
3 查询结果
4 db.modb_test.find({"_id":"5cda9deeac91bb0001e3d582"}).pretty()
5
6 {
7 "_id" : "5cda9deeac91bb0001e3d582",
8 "username" : "igcptest103",
9 "phone" : "13820555567",
10 "create_time" : "2019-05-14 18:52:30",
11 "user_id" : "9b840357-6dc8-48c6-b2e1-081466bd93a8",
12 "realname" : "igcptest103",
13 "is_delete" : 0,
14 "site_info" : [
15 {
16 "pro_list" : [
17 {
18 "role_list" : [
19 "5cda9e25ac91bb0001e3d584"
20 ],
21 "pro_id" : "9cced61a0726b762781b199e"
22 },
23 {
24 "role_list" : [
25 "5cda9e25ac91bb0001e3d584"
26 ],
27 "pro_id" : "76faada2-3381-450c-bca4-4527b44a5b76"
28 },
29 {
30 "role_list" : [
31 "5cda9e25ac91bb0001e3d584"
32 ],
33 "pro_id" : "55439bed-de5a-4539-bee8-33c7ee97a7cc"
34 }
35 ],
36 "sys_role_id" : "5cda9e1aac91bb0001e3d583",
37 "site_id" : "5cc02b9e0726b7066e0d420b",
38 "company_type" : null,
39 "global_project_role_id" : "5cda9e36ac91bb0001e3d585",
40 "belong" : "2",
41 "company_id" : "5c67e745-618e-4e76-9202-b692c345c940",
42 "office_id" : "",
43 "is_valid" : 0,
44 "max_pro_num" : 33,
45 "join_pro_num" : 0
46 },
47 {
48 "site_id" : "casdfweradc2238db9adbdcd"
49 }
50 ],
51 "email" : "igcptest101@yiducloud.cn"
52 }7、删除site_info中site_id为casdfweradc2238db9adbdcd的数据
1 db.modb_test.update({"_id":"5cda9deeac91bb0001e3d582"},{$pull:{"site_info":{"site_id":"casdfweradc2238db9adbdcd"}}})8、只列出site_info中site_id为5cc02b9e0726b7066e0d420b的节点数据
1 db.modb_test.find({"_id":"5cda9deeac91bb0001e3d582"},{"site_info":{$elemMatch:{"site_id":"5cc02b9e0726b7066e0d420b"}}})
2
3 查询结果
4 {
5 "_id" : "5cda9deeac91bb0001e3d582",
6 "site_info" : [
7 {
8 "pro_list" : [
9 {
10 "role_list" : [
11 "5cda9e25ac91bb0001e3d584"
12 ],
13 "pro_id" : "9cced61a0726b762781b199e"
14 },
15 {
16 "role_list" : [
17 "5cda9e25ac91bb0001e3d584"
18 ],
19 "pro_id" : "76faada2-3381-450c-bca4-4527b44a5b76"
20 },
21 {
22 "role_list" : [
23 "5cda9e25ac91bb0001e3d584"
24 ],
25 "pro_id" : "55439bed-de5a-4539-bee8-33c7ee97a7cc"
26 }
27 ],
28 "sys_role_id" : "5cda9e1aac91bb0001e3d583",
29 "site_id" : "5cc02b9e0726b7066e0d420b",
30 "company_type" : null,
31 "global_project_role_id" : "5cda9e36ac91bb0001e3d585",
32 "belong" : "2",
33 "company_id" : "5c67e745-618e-4e76-9202-b692c345c940",
34 "office_id" : "",
35 "is_valid" : 0,
36 "max_pro_num" : 33,
37 "join_pro_num" : 0
38 }
39 ]
40 }9、内嵌节点操作,用点做连接操作符
1 db.modb_test.find("site_info.pro_list.pro_id":"9cced61a0726b762781b199e")10、按条件查询对应数据，然后往site_info中的pro_list中插入数据
1 db.modb_test.update({"_id":"5cda9deeac91bb0001e3d582","site_info.site_id":"5cc02b9e0726b7066e0d420b"},{$push:{"site_info.$.pro_list":{"role_list":[],"pro_id":"12387123261a0726b762781b199e"}}})
2
3 插入后的结果
4 {
5 "_id" : "5cda9deeac91bb0001e3d582",
6 "username" : "igcptest103",
7 "phone" : "13820555567",
8 "create_time" : "2019-05-14 18:52:30",
9 "user_id" : "9b840357-6dc8-48c6-b2e1-081466bd93a8",
10 "realname" : "igcptest103",
11 "is_delete" : 0,
12 "site_info" : [
13 {
14 "pro_list" : [
15 {
16 "role_list" : [
17 "5cda9e25ac91bb0001e3d584"
18 ],
19 "pro_id" : "9cced61a0726b762781b199e"
20 },
21 {
22 "role_list" : [
23 "5cda9e25ac91bb0001e3d584"
24 ],
25 "pro_id" : "76faada2-3381-450c-bca4-4527b44a5b76"
26 },
27 {
28 "role_list" : [
29 "5cda9e25ac91bb0001e3d584"
30 ],
31 "pro_id" : "55439bed-de5a-4539-bee8-33c7ee97a7cc"
32 },
33 {
34 "role_list" : [ ],
35 "pro_id" : "12387123261a0726b762781b199e"
36 }
37 ],
38 "sys_role_id" : "5cda9e1aac91bb0001e3d583",
39 "site_id" : "5cc02b9e0726b7066e0d420b",
40 "company_type" : null,
41 "global_project_role_id" : "5cda9e36ac91bb0001e3d585",
42 "belong" : "2",
43 "company_id" : "5c67e745-618e-4e76-9202-b692c345c940",
44 "office_id" : "",
45 "is_valid" : 0,
46 "max_pro_num" : 33,
47 "join_pro_num" : 0
48 }
49 ],
50 "email" : "igcptest101@yiducloud.cn"
51 }