Expand a date range

[Anonymous]

Hi community, 

have this one fo you:

I have this table called TP (travel periods)

Travel Start	Travel End	Index
20/11/2018	12/12/2018	TP1
10/01/2019	3/04/2019	TP2
30/04/2019	26/06/2019	TP3

what is needed is another table generated from the expansion of Travel Start and Travel End. Something looking like this:

Travel	Index
Nov-18	TP1
Dec-18	TP1
Jan-19	TP2
Feb-19	TP2
Mar-19	TP2
Apr-19	TP2

this will be the conjuction between other tables to combine data together. 

I tried with some variables butt came out to be crap.

Thank you for your help

[Anonymous]

Hi @Anonymous,

Here's how to do it with Power Query.

In the Query Editor, calculate the days in between the end and start dates:

Then add another column that generates all the dates between start and end:

List.Dates([Start],[Subtraction],#duration(1,0,0,0))

After that, just expand the new column with the date list.

Here's a pbix with everything: pbix

Br,

T

[Anonymous]

Hi @Anonymous

thank you for this, however I need the expansion in a brand new table. 

That's why I would suggest a formulated column/table. 

But the TP table should remain as it is (it has another purpose)

[Anonymous · Accepted solution]

Alright,

Then righ-click the original table and select Reference --> this creates another table that references the original TP table (i.e. if the TP table gets updated the updates also carry on to the expanded ), then apply the steps needed in the new table to get the desired result and maintain the origianl table.

An updated pbix: pbix

Br,

T