mirror of
https://github.com/chubin/cheat.sheets
synced 2024-11-03 15:40:17 +00:00
20 lines
422 B
Plaintext
20 lines
422 B
Plaintext
// Create an index
|
|
db.books.createIndex({title:1})
|
|
// Type 1 means ascending; -1 means descending
|
|
|
|
// Create a unique index
|
|
db.books.createIndex( {isbn:1},{unique:true} )
|
|
|
|
// Create a index on multiple fields (compound index)
|
|
db.books.createIndex({title:1, author:-1})
|
|
|
|
// Show all indexes in a collection
|
|
db.books.getIndexes()
|
|
|
|
// Drop an index
|
|
db.books.dropIndex({author:-1})
|
|
|
|
// Show index statistics
|
|
db.books.stats()
|
|
|