Mc Kernel
Mc Kernel
Programming language:Javascript
2021-05-19 21:12:04
0
Q:

how create an index mongodb

Peter
Peter
Code: Javascript
2021-06-03 12:48:59 
db.collection.createIndex({age:1}) //single field asc index on age field
db.collection.createIndex({firstName:1,lastName:-1})//compound index on firstName asc and lastName desc
db.collection.createIndex({locations:1}) //given locations is an array then a multikey index will be created
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