Hello,

Suppose i have a kind named Employee with millions of tuples stored in
GAE. The Employee kind has properties/attributes like EmployeeId,
EmployeeName, Salary, StartDate, DepartmentId.

I would like to know the selectivity of each properties/attributes. In
order to do that, i want an very efficient way to know for example the
lowest, highest salary in Employee kind, number of different
EmployeeName in Employee kind.

Do you have any suggestion?

Thanks!

Bruce

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