MONGODB basic Operating practices--mongodb shell side

One, the connection

1.mongo mongodb://localhost:27000

2.

Show Databases (DBS)

Use test

3.

Db

Show collections

Second, insert

1.db.proccessedfile.insertone ({fileName: "20170403/3.gz", Processeddate:new isodate (), datanumber:10000, x:10})

2.db.mongodb.insertmany ([{item: "Journal", Qty:25, Tags: ["blank", "red"], size: {h:14, w:21, UoM: "CM"}}, { Item: "Mat", qty:85, Tags: ["Gray"], size: {h:27.9, w:35.5, UoM: "CM"}}, {item: "Mousepad", qty:25, tags:["gel "," blue "], size: {h:19, w:22.85, UoM:" CM "}}])

Third, query

1.

Db.proccessedfile.find ()

Db.proccessedfile.find (). Pretty ()//pretty format, document or Bson.document, class JSON standard format output, based on query can be followed by

2.db.mongodb.find ({item: "Mousepad"})

3.db.mongodb.find ({qty: {$in: [+]}}). Pretty ()//=, followed by a collection of array data, like an OR operation, $or followed by a collection of array collections

4.

Db.mongodb.find ({qty: {$lte:}}). Pretty ()//>=

Db.mongodb.find ({qty: {$lte: $, $gte: +}}). Pretty ()//>=, <=

Db.mongodb.find ({item: "Mousepad", Qty: {$lte: $, $gte: +}). Pretty ()//and operation

MONGODB basic Operating practices--mongodb shell side