find with $or in mongobd
db.inventory.find( { $or: [ { quantity: { $lt: 20 } }, { price: 10 } ] } )find with $or in mongobd
db.inventory.find( { $or: [ { quantity: { $lt: 20 } }, { price: 10 } ] } )and operation mongodb find
db.inventory.find( { $and: [ { price: { $ne: 1.99 } }, { price: { $exists: true } } ] } )find by $in mongo
db.persons.find( { name: { $in: [ "John", "David", "Sarah" ] } } )and in mongodb
{ $and: [ <expression1>, <expression2>, ... ] }mongodb find multiple fields
{ <field1>: <value>, <field2>: <value> ... }Copyright © 2021 Codeinu
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