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Max - script function

Max() finds the highest numeric value of the aggregated data in the expression, as defined by a group by clause. By specifying a rank n, the nth highest value can be found.

Syntax:  

Max ( expr [, rank])

Return data type: numeric

Arguments:  

Max arguments
Argument Description
expr The expression or field containing the data to be measured.
rank Expression

The default value of rank is 1, which corresponds to the highest value. By specifying rank as 2, the second highest value is returned. If rank is 3, the third highest value is returned, and so on.

Examples and results:  

Add the example script to your document and run it. Then add, at least, the fields listed in the results column to a sheet in our document to see the result.

Example 1:  

Temp:

LOAD * inline [

Customer|Product|OrderNumber|UnitSales|CustomerID

Astrida|AA|1|10|1

Astrida|AA|7|18|1

Astrida|BB|4|9|1

Astrida|CC|6|2|1

Betacab|AA|5|4|2

Betacab|BB|2|5|2

Betacab|DD

Canutility|DD|3|8

Canutility|CC

] (delimiter is '|');

 

Max:

LOAD Customer, Max(UnitSales) as MyMax Resident Temp Group By Customer;

Example 1 results
Result field (Customer) Result value (MyMax)
Astrida 18
Betacab 5
Canutility 8

Example 2:  

Given that the Temp table is loaded as in the previous example:

LOAD Customer, Max(UnitSales,2) as MyMaxRank2 Resident Temp Group By Customer;

Example 2 results
Result field (Customer) Result value (MyMaxRank2)
Astrida 10
Betacab 4
Canutility -

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