how to create calculate column in Quary Editor " if " formula?

[yoav20007]

I need to add a column with if formula in query editor

if "Alldates.qtty" column is null and the weekday column is not Friday or satardy than the value is 0 . (att pic)

if statement don't work like excel in query editor? 

Thanks 

[ccakjcrx]

@yoav20007

Hey!

I don't have much experience with custom conditional columns and formulas in pbi's query editor. I searched for problems similar to yours, and found that the if statements in this area are significantly different than what is used in excel. 

The following link takes you to a solution in the pbi community I found very educational: problem/solution thread

After reviewing that info, and testing it seems you will need to add a custom column and use the following formula: 

if[weekday] = "Monday" or [weekday]="Tuesday" or [weekday]="Wednesday" or [weekday]="Thursday" or [weekday]="Sunday" and [all_dates.qtty] = "null" then "0" else "null"

I tried to research using 'not' in query editor when adding a custom column, but couldn't find anything in a reasonable amount of time.

I made the assumption that you wanted to leave the field to 'null' if all_dates.qtty is null and weekday is either Friday or Saturday.

[yoav20007]

Hi @CC and thanks for your time

I try to add this to my data and it doesn't work for Sunday.  i don't understand why. see pic.

do you have any idea ? 

[MarcelBeug · Accepted solution]

The issues are the parentheses around null ("null") and the precedence of or and and.

e.g. a or b or c or d and e is equivalent with a or b or c or (d and e).

Anyhow, try:

= Table.AddColumn(#"Renamed Columns5", "Custom", each if (not List.Contains({"Friday","Saturday"},[weekday])) and [All_Dates.qtty] = null then 0 else null)

[yoav20007]

Hi @MarcelBeug thanks!!!