Mac next to MongoDB connection

Not so much chicken soup, start connecting it ~

See a quick-start MongoDB tutorial on the Web, put an address note under ~

One: Connection

In the previous section we installed the MANOGODB, if you successfully installed the words ~ Then, the new open terminal, enter the following instructions to connect.

Mongo

Appears as shown below, well, you're successful-you can do it on the command line.

MongoDB Shell version:3.2.8 Connecting To:test welcome to the MongoDB shell. For interactive help, type ' help '. For more comprehensive documentation, see http://docs.mongodb.org/ Questions? Try the support group http://groups.google.com /group/mongodb-user Server has startup warnings: 2016-08-02t19:16:07.239+0800 I CONTROL  [ Initandlisten] 2016-08-02t19:16:07.239+0800 I CONTROL  [initandlisten] * * warning:soft rlimits too low. Number of files is a, should be at least > > >

If you do not install MongoDB successfully, you may get the following error.

MongoDB Shell version:3.2.8 Connecting To:test 2016-08-02t18:14:33.677+0800 W NETWORK [Thread1] Failed to connect to 127.0.0.1:27017, reason:errno:61 Connection refuse D 2016-08-02t18:14:33.678+0800 E QUERY [thread1] error:couldn ' t connect to server 127.0.0.1:27017, connection attempt FA Iled: [Email protected]/mongo/shell/mongo.js:229:14 @ (Connect): 1:6 Exception:connect failed

So, the failure of the ~ reference to the previous section ~ in the installation bar ~

Second: Adding and deleting changes

1: Database

(1) Querying existing databases

Show DBS

For initial installation, a database such as the one shown below will appear

Local 0.000GB

(2) Installing the database

Use database name (for example: test)

If you have a database with the same name, you can switch to an existing one without creating a new

Switched to DB test

2: Collection

(1) Create a collection

Db.createcollection ("Set name: such as (mycollection)")

Results:

{"OK": 1}

(2) View collection

Show collections

Results:

MyCollection (the collection name created)

3: Add: Insert (for example, set mycollection)

Db.mycollection.insert ({name: "Liujinhuan"})

Results:

Writeresult ({"ninserted": 1})

4: Search: Find (Take the set mycollection as an example)

Db.mycollection.find (). Pretty ()

Results:

{"_id": ObjectId ("57a0871725ae4f21a42b44e3"), "name": "Liujinhuan"}

5: Change: Update (Take the set mycollection as an example). Modify name is Liujinhuan for TTTTTT

Db.mycollection.update ({' name ': ' Liujinhuan '},{$set: {' name ': ' Tttttt '}})

Results:

Writeresult ({"nmatched": 1, "nupserted": 0, "nmodified": 1})

6: Delete: Remove (take the set mycollection as an example)

Db.mycollection.remove ({"Name": "Liujinhuan"})

Results:

Writeresult ({"nremoved": 1})

Three: visual Operation tools

All of these are input instructions executed in the terminal ~ Recommend a visual action tool robomongo~

It's too late ~ tomorrow morning Checkup ~ Early Sleep ~

This article is from the "Cinderella" blog, please be sure to keep this source http://cinderella7.blog.51cto.com/7607653/1833720

Mac next to MongoDB connection