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mongodb check for not null

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Rasel Ahmed answered on July 4, 2020 Popularity 10/10 Helpfulness 4/10

answer mongodb check for not null

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mongodb check for not null

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 db.demo764.find({"LoginUserName":"Chris","LoginPassword" : { '$ne': null } });

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Source: Grepper

Tags: null whatever

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Contributed on Jun 23 2022

Rasel Ahmed

0 Answers Avg Quality 2/10

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mongodb exists and not null

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db.collection1.find({ 'fieldname1' : { $exists: true, $ne: null } });

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Source: Grepper

Tags: exists ex

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Contributed on Jul 04 2020

saggiyogesh

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mongodb is null

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/*
The first non-null input expression value found.
A replacement expression value if all input expressions evaluate to null.
*/

db.inventory.aggregate(
   [
      {
         $project: {
            item: 1,
            description: { $ifNull: [ "$description", "Unspecified" ] }
         }
      }
   ]
)

Popularity 10/10 Helpfulness 4/10 Language sql

Source: www.mongodb.com

Tags: mongodb

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Contributed on Jun 18 2022

Rasel Ahmed

0 Answers Avg Quality 2/10

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