Get Value from Min and Max date in Power Bi - Group by - powerbi

Question

I am working with a database of surgeries performed.
The database contains in each row the patient's id, date of surgery and surgery performed.
A patient can have more than one surgery and this surgery can be different.
What I am trying to obtain is the number of surgeries performed by each patient, what was the first surgery and the last surgery performed.
This is the original database example:
patient
date
surgery
id
A
01-01-22
Eyes
1
B
01-01-22
Mouth
2
C
01-01-22
Nose
3
A
01-05-22
Mouth
4
C
01-06-22
Eyes
5
B
01-07-22
Mouth
6
A
01-12-22
Nose
7
I need the following output:
patient
number of surgeries
First Surgery
Last Surgery
A
3
Eyes
Nose
B
2
Mouth
Mouth
C
2
Nose
Eyes
I'm using the following Dax's expression:
N_Surgery = GROUPBY(Surgery, Surgery[patient_id],
"N_Surgery", COUNTX(CURRENTGROUP(), Surgery[id]))
But i have no idea how to get the last and first surgery.
This is what I am looking to replicate using an example of R code:
Summarise <- DF%>%
group_by(patient_id)%>%
summarise(N_Surgery = n(),
First = surgery[which.min(date)],
Last = surgery[which.max(date)])
Thanks in advance!

Answer 1

Table:
Code:
Table 2 =
ADDCOLUMNS(
SUMMARIZE('Table', 'Table'[patient]),
"Number of Surgeries", CALCULATE(COUNTROWS('Table')),
"First Surgery",
VAR a = CALCULATE(MIN('Table'[date]))
RETURN CALCULATE(MIN('Table'[surgery]), 'Table'[date] = a),
"Last Surgery",
VAR b = CALCULATE(MAX('Table'[date]))
RETURN CALCULATE(MIN('Table'[surgery]), 'Table'[date] = b)
)

Answer 2

You can also try with this 3 measure-
surgery_count = count('your_table_name'[patient])
surgery_first =
var current_patient_min_date =
CALCULATE(
MIN('your_table_name'[date]),
ALLEXCEPT('your_table_name','your_table_name'[patient])
)
RETURN
CALCULATE(
MIN('your_table_name'[surgery]),
FILTER(
ALLEXCEPT('your_table_name','your_table_name'[patient]),
'your_table_name'[date] = current_patient_min_date
)
)
surgery_last =
var current_patient_max_date =
CALCULATE(
MAX('your_table_name'[date]),
ALLEXCEPT('your_table_name','your_table_name'[patient])
)
RETURN
CALCULATE(
MIN('your_table_name'[surgery]),
FILTER(
ALLEXCEPT('your_table_name','your_table_name'[patient]),
'your_table_name'[date] = current_patient_max_date
)
)
Output-