Mongo/Databases - Revision history

Admin: /* Mongo shell */

2018-01-31T08:16:35Z

Mongo shell

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	=Getting Info About Databases=		=Getting Info About Databases=

	==Mongo ~~shell~~==		==Getting Database Info with Mongo Shell==

	Start the mongo shell:		Start the mongo shell:

Admin: /* Dropping Databases from the Mongo Shell */

2018-01-31T08:16:19Z

Dropping Databases from the Mongo Shell

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	To remove (drop) a database, use the <code>db.dropDatabase()</code> function.		To remove (drop) a database, use the <code>db.dropDatabase()</code> function.

	==Dropping Databases ~~from the~~ Mongo Shell==		==Dropping Databases with Mongo Shell==

	From the mongo shell:		From the mongo shell:

Admin: /* Removing (Dropping) Databases */

2018-01-31T08:16:07Z

Removing (Dropping) Databases

← Older revision		Revision as of 08:16, 31 January 2018
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	=Removing (Dropping) Databases=		=Removing (Dropping) Databases=

	To remove (drop) a database, use the <code>db.dropDatabase()</code> function. From the mongo shell:		To remove (drop) a database, use the <code>db.dropDatabase()</code> function.

			==Dropping Databases from the Mongo Shell==

			From the mongo shell:

	<pre>		<pre>
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	> db.dropDatabase()		> db.dropDatabase()
	</pre>		</pre>


	=Adding Databases=		=Adding Databases=

Admin: /* Adding Databases */

2018-01-31T08:15:48Z

Adding Databases

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	MongoDB has a simple approach to adding databases: just act like the database exists already, and if it does not, MongoDB will initialize it for you.		MongoDB has a simple approach to adding databases: just act like the database exists already, and if it does not, MongoDB will initialize it for you.

			==Adding Databases with Mongo Shell==

	After starting the mongo shell, I can create a test_db database by saying "use test_db":		After starting the mongo shell, I can create a test_db database by saying "use test_db":

Admin: /* Removing (Dropping) Databases */

2018-01-31T08:15:29Z

Removing (Dropping) Databases

← Older revision		Revision as of 08:15, 31 January 2018
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			=Adding Databases=

			MongoDB has a simple approach to adding databases: just act like the database exists already, and if it does not, MongoDB will initialize it for you.

			After starting the mongo shell, I can create a test_db database by saying "use test_db":

			<pre>
			$ mongo
			> use test_db
			</pre>

			You can always see the available databases using the <code>show dbs</code> command:

			<pre>
			> show dbs
			local 0.78125GB
			test_db 0.23012GB
			</pre>

			Note: a database with zero records in it will not show up when you run the <code>show dbs</code> command. Add records to see the database.

			=Resources=

			Administration commands: https://docs.mongodb.com/manual/reference/command/nav-administration/

	[[Category:MongoDB]]		[[Category:MongoDB]]
	[[Category:Databases]]		[[Category:Databases]]

Admin: /* Getting Info About Databases */

2018-01-31T08:12:11Z

Getting Info About Databases

← Older revision		Revision as of 08:12, 31 January 2018
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	> db.getCollectionNames()		> db.getCollectionNames()
	</pre>		</pre>

			==Command line==

			To bypass the javascript shell and run commands directly from the command line, run the commands using --eval:

			<pre>
			mongo <dbname> --eval "db.getMongo().getDBNames()"
			mongo <dbname> --eval "db.getCollectionNames()"
			mongo <dbname> --eval "db.dropDatabase()"
			</pre>

			=Removing (Dropping) Databases=

			To remove (drop) a database, use the <code>db.dropDatabase()</code> function. From the mongo shell:

			<pre>
			$ mongo
			> use test_db
			> db.dropDatabase()
			</pre>




			[[Category:MongoDB]]
			[[Category:Databases]]

Admin: Created page with "=Getting Info About Databases= ==Mongo shell== Start the mongo shell:

 $ mongo >

To list all available databases, use any of these commands:

 > db.adminC..."

2018-01-31T08:08:55Z

Created page with "=Getting Info About Databases= ==Mongo shell== Start the mongo shell: <pre> $ mongo > </pre> To list all available databases, use any of these commands: <pre> > db.adminC..."

New page

=Getting Info About Databases=

==Mongo shell==

Start the mongo shell:

<pre>
$ mongo
>
</pre>

To list all available databases, use any of these commands:

<pre>
> db.adminCommand('listDatabases')
> db.getMongo().getDBNames()
> show databases
> show dbs
</pre>

Show all tables and collections in a database:

<pre>
> use test_db
> show tables
> show collections
> db.getCollectionNames()
</pre>