Pivoting with SQL Kent Milligan – IBM Technology Expert Labs

​Now that each employee’s deduction has a unique identifier associated with it, the next step is getting those individual deduction column values into a single row for each employee.
The Partition By keyword on the Row_Number specification is what causes the seqnum column (i.e., the unique identifier) value to reset to 1 when it encounters the deductions for a different employee. Read More 

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