[
        {"keyName": "session_days", "sourceTable": "computed", "sourceColumn": "getSessionDays", "dataType": "string", "isNullable": true},
        {"keyName": "session_date", "sourceTable": "computed", "sourceColumn": "formatSessionDateRange", "dataType": "string", "formatType": "custom:DD-MM-YYYY", "isNullable": false},
        {"keyName": "session_time", "sourceTable": "computed", "sourceColumn": "getSessionTime", "dataType": "string", "isNullable": true}
    ]