TOTAL vs Aggr in Qlikview

问题

I'm trying to understand how TOTAL and Aggr work in qlikview. Could someone please explain the difference between the two examples below, and if possible please illustrate with a sql query?

Code:

Example1:

Max({<Field1=>} Aggr(Sum({<Field2={'Value'}, Field1=>} StuffCount), Field1))


Example2:

Max({<Field1=>} TOTAL Aggr(Sum({<Field2={'Value'}, Field1=>} StuffCount), Field1))

回答1:

Not sure what you mean with and SQL query in this example. Anyway, imagine you have this list of Customers (CustomerID) and Sales (Sales):

CustomerID/ Sales

Customer1 25
Customer2 20
Customer1 10
Customer1 5
Customer1 20
Customer3 30
Customer2 30

Then you want to show it on a pivot table with dimension CustomerID and two expressions:

Max(Aggr(Sum(Sales), CustomerID)) // this will show 60 for the first customer, 50 for the second and 30 for the third one
Max(TOTAL Aggr(Sum(Sales),CustomerID)) //this will show 60 in every row of your table (which is the maximum sum of sales among all customers)

So basically AGGR creates a temporal list of whatever you put in the first function input (in this case sum(Sales)) using the dimension of the second (CustomerID). Then you can perform operations on that list (such as Max, Min, Avg...). If you write TOTAL and use the expression in a pivot table, then you 'ignore' the dimensions that might be affecting the operations. Hope it helps

回答2:

TOTAL keyword is useful in charts/pivot tables. It applies the same calculation on every datapoint in the chart/pivot, with independence of dimentions.

Therefore - if you put your expression into pivot table - 1st option may display different values per cell (if the Aggr is rellevant) when the 2nd will result in same values.

Aggr function allows making double aggregations (avg of sum, max of count etc..) on different group by bases.

来源：https://stackoverflow.com/questions/44446403/total-vs-aggr-in-qlikview

标签

qlikview