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what is render variable
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Answer Posted / vanthian
As far as i know
Render variales are generally created to conditionally
render a particular page or chart or list or block etc...
Though the purpose of the render variable is to hide the
particular item..we can't say that it is use to hide a
particular item...
Consider a scenario..
You have created two list reports for two countries
List1 is for both country1 and country2
List2 is for country 2 alone
List1 is created from the query1
List2 is created from the query2
Now u create a conditional string variable called 'Country'
which uses country name as a parameter
Now u associate Variable 'Country' as render variable for
List1 and List2
Now whenever u run the report..when u select country1 then
automatically the two queries will be rendered to the two
list and the two lists will be displayed
But when u select Country2 as parameter then only Query2
will be rendered and the list2 will be displayed in cognos
viewer window...
Note...
When u use Conditional variable u r just hiding the output
from the user..but in the backend the two queries will be
processed by cognos....hence ur precious time will be
wasted..
But when u r using the render variable only the Queries
which satisfies the parameter will be rendered and hence
the other queries will not be processed in backend by cognos
I hope this helps you
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