Read JSON from Azure Blob Storage using PowerShell

Question

I have a following JSON file/blob in the Azure Storage as students.json. Using Powershell, I want to read the contents of the file, student's FirstName and LastName where the MainSubject is Math

{
  "college": {
    "students": [
      {
        "FirstName": "abc",
        "LastName": "xyz",
        "MainSubject": "Computers"
      },
      {
        "FirstName": "lmn",
        "LastName": "opq"
        "MainSubject": "Math"        
      }
    ]
  }
}

Answer 1

I have reproduced in my environment and got expected results as below and followed Microsoft-Document and Thanks to @ Ivan Yang's SO-thread :

    $accountName = "rithwikstor"
    $accountKey = "XX"
    $containerName = "rithwik"
    $blobName = "emo.json"
    $context = New-AzStorageContext -StorageAccountName $accountName -StorageAccountKey $accountKey
    $container_client = Get-AzStorageContainer -Name $containerName -Context $context
    $source_blob_client = $container_client.CloudBlobContainer.GetBlockBlobReference($blobName)
    $download_file = $source_blob_client.DownloadText()
    $jsonContent = $download_file | ConvertFrom-Json
    
    
    $ans=$jsonContent.college | ConvertTo-json
    $res= $ans | ConvertFrom-json
    $res.students | where{$_.Mainsubject -eq 'Math'}
    $emo=$res.students | where{$_.Mainsubject -eq 'Math'}
    $emo | Select-Object * -ExcludeProperty MainSubject

XX is the Storage account key. Got it from below:

Output: