Generate TOTAL_INSPRINTBUGS_SPRINTWISE and show Issue Key that can be used for Drill through later

This can be done in Power Query much easier. Here's the M Code.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("jc47CoAwEATQq4TUCsluvqV6BMuQA9iIiPdHJRG7ZJplBh7MpiSneZHDe8V6nNt+CaVLHzmqJ5EiknloQ2pDqtCwQ6FHYWhD/qBjEPrOtK8wWBh2fgwVRtYFchcSCg0KLQo9CDWjEJwO8Yf5Bg==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [PROJECT_KEY = _t, SPRINT_NAME = _t, ISSUE_KEY = _t, YEAR = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"PROJECT_KEY", type text}, {"SPRINT_NAME", type text}, {"ISSUE_KEY", type text}, {"YEAR", type text}}),
    #"Grouped Rows" = Table.Group(#"Changed Type", {"PROJECT_KEY", "SPRINT_NAME", "YEAR"}, {
        {"ISSUE_KEY", each Text.Combine([ISSUE_KEY], ","), type text},
        {"TOTAL_INSPRINTBUGS_SPRINTWISE", each Table.RowCount(_), Int64.Type}
    })
in
    #"Grouped Rows"

Results:

Thank you very much

Thank you very much

Hi JeevanMallya, please consider to accept the correct reply as solution.