topic Re: Using switch in M in DAX Commands and Tips

Using switch in M

AU555 — Mon, 16 Dec 2019 12:45:43 GMT

Hi all,

I have an easy problem, but as I am a beginner i M I have a bit proglem with this. I have the following calculation in dax swithing between several dates. However, I need to make the same calculation in power query and what i have been trying is not working does not pull the dates correctly:

I have following:

Date = SWITCH(

TRUE();

'table1'[Real Finish]<> BLANK(); 'table1'[Real Finish];

'table1'[Remaining Finish] <> BLANK(); 'table1'[Remaining Finish];

'table1'[Actual Finish]<> BLANK(); 'table1'[Actual Finish];

'table1'[Real Start]<> BLANK(); 'table1'[Real Start];

'table1'[Remaining Start] <> BLANK(); 'table1'[Remaining Start];

'table1'[Actual Start])

Can some of you help me with this?

Thank you for your time,

Anastasia

Re: Using switch in M

AlB — Mon, 16 Dec 2019 16:27:26 GMT

Hi AU555,

you can try something like this, try adding a custom column with the following code

if [C1] = null then [C1_1]

else

if [C2] = null then [C2_1]

else

if [C3] = null then [C3_1]

else [C4]

This would be equivalent to the following. IUse this pattern to build exactly what you need

ColumnName = SWITCH(

TRUE();

'table1'[C1]<> BLANK(); 'table1'[C1_1];

'table1'[C2] <> BLANK(); 'table1'[C2_1];

'table1'[C3]<> BLANK(); 'table1'[C3_1];

'table1'[C4])

Please mark the question solved when done and consider giving kudos if posts are helpful.

Cheers

Re: Using switch in M

AU555 — Tue, 17 Dec 2019 10:01:19 GMT

I am a bit confused: this calculation in DAX says: if C1 is not blank, use C1_1, if C2 is not blank, use C2_1 (<> is no eqal to)

ColumnName = SWITCH(

TRUE();

'table1'[C1]<> BLANK(); 'table1'[C1_1];

'table1'[C2] <> BLANK(); 'table1'[C2_1];

'table1'[C3]<> BLANK(); 'table1'[C3_1];

'table1'[C4])

and the calculation in M:

if [C1] = null then [C1_1]

else

if [C2] = null then [C2_1]

else

if [C3] = null then [C3_1]

else [C4]

says, if C1 is null then use C1_1, is C2 is null then use C2

But I need calculation saying, If C1 is not blank use C1, if C1 is blank use C2, if C2 is not blank use C2, if C2 is blank use C3 etc....

Re: Using switch in M

AlB — Tue, 17 Dec 2019 12:46:24 GMT

AU555

You're right. Make it <> null in all cases instead of = null

Please mark the question solved when done and consider giving kudos if posts are helpful.

Cheers