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Helper I

DAX To Split into Rows on Delimeter

Hello All. So I have an Employee data set.  I needed to get the hierarchal structure of the company so I used the PATH function to achieve this.  but now I have an additional requirement that requires me to parse this column and I can't figure out how to do this.

The result of the PATH function looks like this

0175|0116|0423|0066|0001

I need to split this column into ROWS based on delimter.  There must be a DAX function to achieve this.

Thanks

1 ACCEPTED SOLUTION

Accepted Solutions
Highlighted
Post Partisan

Re: DAX To Split into Rows on Delimeter

1) Create a linked table for the Student.

2) Create a table called DummyTbl which is just a list of running numbers from 1 till n. The value of n should be equal to the max number of subjects that a student can have. In this demo, I am assuming that a student can have a max of 10 subjects, so my Dummy table will consist of numbers 1 – 10.

3) Now let us create the DAX queries in DAX Studio. First, we will create a computed column called SubCnt which will give the number of subjects for each row.

EVALUATE
SUMMARIZE (
Student,
[StudentName],
[Subject],
“SubCnt”,
1 + Len ( [Subject] ) – Len ( Substitute ( [Subject], “,”, “” ) )
)

4) The only way we can increase the number of rows of a table is by using the function CrossJoin. So let us CrossJoin the Student table with the DummyTbl.

EVALUATE
Crossjoin (
SUMMARIZE (
Student,
[StudentName],
[Subject],
“SubCnt”,
1 + Len ( [Subject] ) – Len ( Substitute ( [Subject], “,”, “” ) )
),
DummyTbl
)

5) Now filter the resultant table where SubCnt is less than or equal to Dummy column. Now we have got the exact number of rows needed for the end result.

EVALUATE
Filter (
Crossjoin (
SUMMARIZE (
Student,
[StudentName],
[Subject],
“SubCnt”,
1 + Len ( [Subject] ) – Len ( Substitute ( [Subject], “,”, “” ) )
),
DummyTbl
),
DummyTbl[Dummy] <= [SubCnt]
)

6) The only thing left is to split the delimited subjects to the single subject for each row. And the only way to split delimited values is to use the PATHITEM function. To use the PATHITEM function, we should substitute the commas (,) with the pipe (|) symbol.

EVALUATE
FILTER (
CROSSJOIN (
SUMMARIZE (
Student,
[StudentName],
[Subject],
“SubCnt”,
1 + Len ( [Subject] ) – Len ( Substitute ( [Subject], “,”, “” ) )
),
DummyTbl
),
DummyTbl[Dummy] <= [SubCnt]
),
“SubName”,
PATHITEM (
SUBSTITUTE ( Student[Subject], “,”, “|” ),
DummyTbl[Dummy]
)
)

7) Now all we need to do is to select the two required columns.

EVALUATE
SUMMARIZE (
FILTER (
CROSSJOIN (
SUMMARIZE (
Student,
[StudentName],
[Subject],
“SubCnt”,
1 + Len ( [Subject] ) – Len ( Substitute ( [Subject], “,”, “” ) )
),
DummyTbl
),
DummyTbl[Dummy] <= [SubCnt]
),
“SubName”,
pathitem (
Substitute ( Student[Subject], “,”, “|” ),
DummyTbl[Dummy]
)
),
[StudentName],
[SubName]
)
ORDER BY [StudentName]

10 REPLIES 10
Highlighted
Resolver II

Re: DAX To Split into Rows on Delimeter

This sounds like something you want to do within the Query Editor. You can split a column by delimiter (Transform ribbon > Split Column > by Delimiter)

In the window that pops up, you can change the delimiter to Custom (and enter " | " ), and in the Advanced Options, choose "Split into Rows" as shown in the attached image.

Highlighted
Helper I

Re: DAX To Split into Rows on Delimeter

I cannot use Power Query as the column I need to parse is a calculated column.

Highlighted
Super User I

Re: DAX To Split into Rows on Delimeter

Are you trying to obtain end results similar to https://www.daxpatterns.com/parent-child-hierarchies/#organizational-structure?

I do not believe the intention of PATH is phyically alter the table but rather allow you to access levels within the path with PATHITEM( ).

Proud to be a Super User!

Highlighted
Helper I

Re: DAX To Split into Rows on Delimeter

Sort of...i already achieved those particular results.  I am trying to get to the next level. Each employee is on multiple "Teams" as denoted by the Path. I need to be able to list those teams out in rows by employee.

Highlighted
Super User I

Re: DAX To Split into Rows on Delimeter

Proud to be a Super User!

Highlighted
Helper I

Re: DAX To Split into Rows on Delimeter

I can't provide a sample. Apologies. Against company policy.  though all i need to know is if there is a way to split the values in a column into rows based on delimiter. Using DAX. The values are separated by a pipe.

Microsoft

Re: DAX To Split into Rows on Delimeter

Did you get solution Please share if you can?

Highlighted
Helper I

Highlighted
Post Partisan

Re: DAX To Split into Rows on Delimeter

1) Create a linked table for the Student.

2) Create a table called DummyTbl which is just a list of running numbers from 1 till n. The value of n should be equal to the max number of subjects that a student can have. In this demo, I am assuming that a student can have a max of 10 subjects, so my Dummy table will consist of numbers 1 – 10.

3) Now let us create the DAX queries in DAX Studio. First, we will create a computed column called SubCnt which will give the number of subjects for each row.

EVALUATE
SUMMARIZE (
Student,
[StudentName],
[Subject],
“SubCnt”,
1 + Len ( [Subject] ) – Len ( Substitute ( [Subject], “,”, “” ) )
)

4) The only way we can increase the number of rows of a table is by using the function CrossJoin. So let us CrossJoin the Student table with the DummyTbl.

EVALUATE
Crossjoin (
SUMMARIZE (
Student,
[StudentName],
[Subject],
“SubCnt”,
1 + Len ( [Subject] ) – Len ( Substitute ( [Subject], “,”, “” ) )
),
DummyTbl
)

5) Now filter the resultant table where SubCnt is less than or equal to Dummy column. Now we have got the exact number of rows needed for the end result.

EVALUATE
Filter (
Crossjoin (
SUMMARIZE (
Student,
[StudentName],
[Subject],
“SubCnt”,
1 + Len ( [Subject] ) – Len ( Substitute ( [Subject], “,”, “” ) )
),
DummyTbl
),
DummyTbl[Dummy] <= [SubCnt]
)

6) The only thing left is to split the delimited subjects to the single subject for each row. And the only way to split delimited values is to use the PATHITEM function. To use the PATHITEM function, we should substitute the commas (,) with the pipe (|) symbol.

EVALUATE
FILTER (
CROSSJOIN (
SUMMARIZE (
Student,
[StudentName],
[Subject],
“SubCnt”,
1 + Len ( [Subject] ) – Len ( Substitute ( [Subject], “,”, “” ) )
),
DummyTbl
),
DummyTbl[Dummy] <= [SubCnt]
),
“SubName”,
PATHITEM (
SUBSTITUTE ( Student[Subject], “,”, “|” ),
DummyTbl[Dummy]
)
)

7) Now all we need to do is to select the two required columns.

EVALUATE
SUMMARIZE (
FILTER (
CROSSJOIN (
SUMMARIZE (
Student,
[StudentName],
[Subject],
“SubCnt”,
1 + Len ( [Subject] ) – Len ( Substitute ( [Subject], “,”, “” ) )
),
DummyTbl
),
DummyTbl[Dummy] <= [SubCnt]
),
“SubName”,
pathitem (
Substitute ( Student[Subject], “,”, “|” ),
DummyTbl[Dummy]
)
),
[StudentName],
[SubName]
)
ORDER BY [StudentName]

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