Created
July 29, 2015 04:21
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MongoDB CRUD Examples
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db.persons.insert( { fname : "John" , lname : "Doe", gender : "M" }) | |
db.persons.insert( | |
[ | |
{ fname : "Jane" , lname : "Doe", gender : "F" }, | |
{ fname : "James" , lname : "Bond", gender : "M", Age : 31 }, | |
{ fname : "Jack" , lname : "Daniel", Age : 24 }, | |
]) | |
db.persons.find ( | |
{ | |
"fname" : { | |
$exists : false | |
} | |
} ) | |
select * from persons | |
where fname = "James" | |
db.persons.find( { fname : "James" } ) | |
select lname, fname | |
from persons | |
where (fname = "Jack" OR lname = "Doe") | |
and gender = "M" | |
order by lname desc | |
db.persons.find( | |
{ $and : | |
[ | |
{ $or : | |
[ | |
{ fname : "James" }, | |
{ lname : "Doe" } | |
] | |
}, | |
{ gender : "M" } | |
] | |
}, | |
{ lname : 1, fname : 1, _id : 0 } | |
).sort ( { lname : -1 } ) | |
update persons | |
set favcolor = 'blue, red, yellow' | |
where f_name = 'John' | |
db.persons.update( | |
{ fname : "John" }, | |
{ $set : { favcolor : [ 'blue', 'red', 'yellow' ] } }) | |
update persons | |
set Age = 29 | |
where lname = 'Doe' | |
db.persons.update( | |
{ lname : "Doe" }, | |
{ $set : { age : 29 } }, | |
{ multi : true }) | |
db.persons.update ( | |
{ fname : "Jack" }, | |
{ fname : "Jacky" , lname : "Chen", Age : 56 }) | |
db.persons.update( | |
{ fname : "John" }, | |
{ $addToSet : { favcolor : 'green' } }) | |
db.persons.update( | |
{ fname : "John" }, | |
{ $addToSet : { favcolor : { $each : ['green', 'brown', 'purple','red'] } } }) | |
db.persons.update ( | |
{ fname : "Joe" }, | |
{ fname : "Joe" , lname : "Amstrong", Age : 45, favcolor : [ 'red', 'brown' ] }) | |
db.persons.update ( | |
{ fname : "Joe" }, | |
{ fname : "Joe" , lname : "Amstrong", Age : 45, favcolor : [ 'red', 'brown' ] }, | |
{ upsert : true }) | |
db.persons.findAndModify ( { | |
query : { lname : "Doe" }, | |
sort : { lname : 1 }, | |
update : { $set : { Age : 1 } }, | |
upsert : true, | |
new : true | |
}) | |
db.persons.findAndModify ( { | |
query : { lname : "Chen" }, | |
sort : { fname : 1 }, | |
remove : true | |
}) | |
db.persons.drop() | |
db.persons.remove( {} ) | |
db.persons.remove( { lname : "Doe" }) | |
db.persons.remove( { lname : "Doe" }, 1 }) | |
db.gradesSimple.aggregate ( | |
{ $match : { "type" : "quiz" } }, | |
{ $group : { _id : "$student_id", average : { $avg : "$score" } } } | |
) | |
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