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2.13 Grouping: logical AND

 
spl-cookbook(224)

Perform logical AND operation at aggregation on a sequence made up of boolean values. One task is to find if all students in each class have access to cell phones in online classes based on the following primary school online teaching terminal survey table.

ID STUDENT_NAME CLASS TERMINAL
1 Rebecca Moore Class one Phone
2 Ashley Wilson Class one Phone,PC,Pad
3 Rachel Johnson Class one Phone,PC,Pad
4 Emily Smith Class one Phone,Pad
5 Ashley Smith Class one Phone,PC
6 Matthew Johnson Class one Phone
7 Alexis Smith Class one Phone,PC
8 Megan Wilson Class one Phone,PC,Pad
… … … …

SPL script:

A
1 =T(“survey.xlsx”)
2 =A1.group(CLASS;~.(TERMINAL.split@c().pos(“Phone”) > 0).cand():CAND)

A1 Load data table.
A2 Group the table by class and for each group use cand() function to find if each TERMINAL value contains Phone.

Execution result:

CLASS CAND
Class one true
Class two true
Class three true
… …
spl-cookbook(224)
 
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