hi Jones,
use the below link to know about match condition.
https://help.qlik.com/en-US/qlikview/April2019/Subsystems/Client/Content/QV_QlikView/Scripting/Condi...
use cases are :
for performance wise we have to use match function in place of multiple IF condition like
if (Country='ABC' or Country='XYX',sales) as Sales this is the costly expression in terms of performance
so we can use the match function in place of If condition.
if(match(Country,'ABC','XYX'),sales) as Sales
