How to group durations

Hello TimR 

you can ues nested if-statements like this

if [Duration action]<#duration(0,0,0,31) then "0 - 30 sec" else if [Duration action]<#duration(0,0,1,1) then "30s - 1m" else "etc."

here a complete example

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("TYnJCcBADMR68TsMM/Yewa0Y999G9hFCQB9JVabkYWMuWl9lTF8nQR6vk6mBCP5c8Pn9kXL4va37AQ==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Duration action" = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Duration action", type duration}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Grouped duration", each if [Duration action]<#duration(0,0,0,31) then "0 - 30 sec" else if [Duration action]<#duration(0,0,1,1) then "30s - 1m" else "etc.")
in
    #"Added Custom"

Copy paste this code to the advanced editor in a new blank query to see how the solution works.

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy

Hello TimR 

use this code instead

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("TYnJCcBADMR68TsMM/Yewa0Y999G9hFCQB9JVabkYWMuWl9lTF8nQR6vk6mBCP5c8Pn9kXL4va37AQ==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Duration action" = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Duration action", type duration}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Grouped duration", each try if [Duration action]<#duration(0,0,0,31) then "0 - 30 sec" else if [Duration action]<#duration(0,0,1,1) then "30s - 1m" else "etc." otherwise null)
in
    #"Added Custom"

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy