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mongodb count conditional array items Code Example
mongodb count conditional array items 
db.collection.aggregate([
  { "$project": {
    "total": {
      "$size": {
        "$filter": {
          "input": "$Array",
          "cond": { "$eq": [ "$$this.field1", "a" ] }
        }
      }
    }
  }}
])



Javascript

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Type:
 Code Example
Category:
 Coding
Sub Category:
 Code Example
Uploaded by:
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