How to list all collections in the mongo shell?
在MongoDB shell中，如何列出我正在使用的当前数据库的所有集合？
You can do...
JS (shell):
db.getCollectionNames()
node.js:
db.listCollections()
non-JS (shell only):
show collections
The reason I call that non-JS is because:
$ mongo prodmongo/app --eval "show collections"
MongoDB shell version: 3.2.10
connecting to: prodmongo/app
2016-10-26T19:34:34.886-0400 E QUERY [thread1] SyntaxError: missing ; before statement @(shell eval):1:5
$ mongo prodmongo/app --eval "db.getCollectionNames()"
MongoDB shell version: 3.2.10
connecting to: prodmongo/app
[
"Profiles",
"Unit_Info"
]
If you really want that sweet, sweet show collections output, you can:
$ mongo prodmongo/app --eval "db.getCollectionNames().join('n')"
MongoDB shell version: 3.2.10
connecting to: prodmongo/app
Profiles
Unit_Info
> show collections
将列出当前选定数据库中的所有集合，如命令行帮助（ help ）中所述。
how do I list all collections for the current database that I'm using?
3 Methods
show collections show tables db.getCollectionNames() To list all databases:
show dbs
To enter or use given database:
use databasename
To list all collections:
show collections
Output:
collection1
collection2
system.indexes
(or)
show tables
Output:
collection1
collection2
system.indexes
(or)
db.getCollectionNames()
Output:
[ "collection1", "collection2", "system.indexes" ]
To enter or use given collection
use collectionname
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