Description
Let's assume we have the following record
> db.users.findOne()
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{
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"_id" : ObjectId("4e2f0a99a26037e417000056"),
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"info" : {
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"Qu" : {
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"start" : "1320021626",
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"stop" : 1320779121
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},
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"Se" : {
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"start" : 1320021628,
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"stop" : 1320779121
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},
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"Se I" : {
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"start" : "1320021629",
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"stop" : 1320779121
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},
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"Se I_Se M" : {
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"start" : "1320021635",
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"stop" : 1320779121
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},
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"Se M" : {
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"start" : "1320021639",
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"stop" : 1320779121
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},
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"So" : {
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"start" : "1320021641",
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"stop" : 1320779121
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}
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}
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}
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and update it with the following code
> db.users.update({'_id':ObjectId('4e2f0a99a26037e417000056')},{'$set':{'info.Qu.start':'a', 'info.Se.start':'a', 'info.Se I.start':'a', 'info.Se I_Se M.start' : 'a', 'info.Se M.start':'a', 'info.So.start':'a'}})
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Everything seems to work out ok, but info.Se actually was not updated but duplicated !
> db.users.findOne()
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{
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"_id" : ObjectId("4e2f0a99a26037e417000056"),
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"info" : {
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"Qu" : {
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"start" : "a",
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"stop" : 1320779121
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},
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"Se" : {
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"start" : 1320021628,
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"stop" : 1320779121
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},
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"Se I" : {
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"start" : "a",
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"stop" : 1320779121
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},
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"Se I_Se M" : {
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"start" : "a",
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"stop" : 1320779121
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},
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"Se M" : {
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"start" : "a",
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"stop" : 1320779121
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},
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"Se" : {
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"start" : 1320021628,
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"stop" : 1320779121
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},
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"So" : {
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"start" : "a",
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"stop" : 1320779121
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}
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}
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}
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> db.users.findOne({},{'info.Se':1})
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{
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"_id" : ObjectId("4e2f0a99a26037e417000056"),
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"info" : {
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"Se" : {
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"start" : 1320021628,
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"stop" : 1320779121
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},
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"Se" : {
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"start" : 1320021628,
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"stop" : 1320779121
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}
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}
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}
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