How to show the day in which the most connections conducted in each month in Qlik sense - qlikview

Question

My data is about connections in 2019. It should show the day in which maximum connections conducted in each month.
It should be like that:
Jan
01.03.2019
45
Feb
02.05.2019
43
But i was able to achieve:
Jan
01.03.2019
752
Feb
02.05.2019
742
This so far. It shows total number of connections in that month instead of that day.
I will be grateful if somebody helps me solve this. Thanks ahead.

Answer 1

Depending on how exactly you want the end result to look, you can use a combination of the following functions and expressions:
Aggr() function
Max() function
Only() function
Concat() function
Total qualifier
Set analysis
Here's what we can achieve using those functions:
To create the field [Connection Month], we simply use the expression Month([Connection Date]) in the Data Load Editor when creating the new field, though it may be wise to use something like MonthName([Connection Date]) instead in case we ever need to view multiple years at the same time.
Then, to create the aggregation expressions in a table chart, we can first create the [Dates with Monthly Max] field by using the following expression:
=Concat(
Aggr(
Only(
{<[Connection Date] = {"=Aggr(Max(total <[Connection Month]> Aggr(Count([Connection ID]), [Connection Date])) = Sum(Aggr(Count([Connection ID]), [Connection Date])), [Connection Month], [Connection Date])"}>}
[Connection Date]
)
, [Connection Date]
), ', ')
Let's break that down:
{<[Connection Date] = {"=Aggr(Max(total <[Connection Month]> Aggr(Count([Connection ID]), [Connection Date])) = Sum(Aggr(Count([Connection ID]), [Connection Date])), [Connection Month], [Connection Date])"}>}
Above is the set expression that we use to select only the [Connection Dates] where the count of [Connection ID] was the Max() for that [Connection Month].
=Concat(
...
, ', ')
The above Concat() function will make a comma list of dates if multiple dates each have the Max() count of [Connection ID] for that [Connection Month].
Finally, we use the following expression to create the [Monthly Connection Max] field:
=Max(total <[Connection Month]> Aggr(Count([Connection ID]), [Connection Date]))