#5596 perf: for .last method delay Array#join operation - Ruby on Rails

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#5596 ✓committed

perf: for .last method delay Array#join operation

Reported by Neeraj Singh | September 9th, 2010 @ 09:42 PM | in 3.x

Three performance improvements:

for simple cases like User.last and User.order('name desc').last no need to perform Array#join operation.
Instead of performing String#blank? do Array#empty?
no need to create variable relation

Attached is patch