RSpec
Ruby on Rails
RubyNotes posted by zimbatm
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zimbatm -
July 27, 2011 - (>= v3.0.0)
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Multiple update, on query ?
Person.update(people.keys, people.values)
Will this request issue one or multiple queries to update the table data (as in http://stackoverflow.com/questions/3432/multiple-updates-in-mysql#3466 )
The answer is: it will do TWO queries per updated row. One select and one update.
