Shulou(Shulou.com)06/01 Report--

1. View the collection

Show collections

two。 Add data to the collection

Db.runoob.insertMany ([

{

'title':'data1'

'url':' https://blog.51cto.com/suyanzhu',

'description':'this is data1'

'view':5000

}

{

'title':'data2'

'url':' https://blog.51cto.com/suyanzhu',

'description':'this is data2'

'view':3650

}

{

'title':'data3'

'url':' https://blog.51cto.com/suyanzhu',

'description':'this is data3'

'view':9527

}

])

3. View data

Db.runoob.find () .pretty ()

4. Multi-conditional AND query

Db.runoob.find ({'title':'data1','view':5000}) .pretty ()

5. Multi-conditional OR query

Db.runoob.find ({$or: [{'title':'data1'}, {' view': {$gt:5000}}]}) .pretty ()

6. Queries that use both and and or

Db.runoob.find ({'view': {$gt:3000}, $or: [{' title':'data1'}, {'description':'this is data2'}]}) .pretty ()

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