文档操作Word格式.docx
- 文档编号:22318970
- 上传时间:2023-02-03
- 格式:DOCX
- 页数:24
- 大小:18.86KB
文档操作Word格式.docx
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JS"
"
C++"
EXTJS"
MONGODB"
],
address:
{city:
beijing"
street:
861ParkStreet"
}
},
{
tom"
null,
214557457@"
75,m:
66,e:
97,
PHP"
JAVA"
province:
hebei"
lili"
344521457@"
63,e:
C#"
]
zhangsan"
27,
2145567457@"
86,e:
67,
China"
lisi"
26,
274521457@"
53,m:
83,
wangwu"
65621457@"
45,m:
65,e:
99,
zhaoliu"
214521457@"
99,m:
piaoyingjun"
piaoyingjun@"
39,m:
54,e:
53,
Korea"
lizhenxian"
lizhenxian@"
35,m:
56,e:
47,
lixiaoli"
21,
lixiaoli@"
36,m:
32,
Limiao"
zhangsuying"
22,
zhangsuying@"
77,
}]
先执行
db.studend.find()
若存在测删除student
db.student.drop()
再执行插入
db.student.insert(persons)
>
BulkWriteResult({
"
writeErrors"
:
[],
writeConcernErrors"
nInserted"
12,
nUpserted"
0,
nMatched"
nModified"
nRemoved"
upserted"
[]
})
然后查询所有student记录
db.student.find()
{"
_id"
ObjectId("
57554f9cf7b6c25c4d573c73"
),"
name"
"
age"
25,"
email"
c"
89,"
m"
96,"
e"
87,"
country"
books"
["
],"
address"
{"
city"
street"
}}
57554f9cf7b6c25c4d573c74"
null,"
75,"
66,"
97,"
province"
57554f9cf7b6c25c4d573c75"
63,"
]}
57554f9cf7b6c25c4d573c76"
27,"
86,"
67,"
57554f9cf7b6c25c4d573c77"
26,"
53,"
83,"
57554f9cf7b6c25c4d573c78"
45,"
65,"
99,"
57554f9cf7b6c25c4d573c79"
57554f9cf7b6c25c4d573c7a"
39,"
54,"
57554f9cf7b6c25c4d573c7b"
35,"
56,"
47,"
57554f9cf7b6c25c4d573c7c"
21,"
36,"
32,"
57554f9cf7b6c25c4d573c7d"
57554f9cf7b6c25c4d573c7e"
22,"
77,"
也可以使用这个命令
db.student.find({})
2.查询所有学生的姓名
db.student.find({},{_id:
0,name:
1})
}
3.查询出年龄在25到27岁之间的学生
db.student.find({age:
{$gte:
25,$lte:
27}})
下面这种方式更直观
db.student.find({age:
27}},{_id:
1,age:
25}
27}
26}
4.查询出所有不是韩国籍的学生
db.student.find({country:
{$ne:
}},{_id:
1,country:
5.查询国籍是中国或美国的学生信息
db.student.find({country:
{$in:
]}})
6.查询国籍不是中国或美国的学生信息
{$nin:
K
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