doctrine/dbal — pull request #575 by deeky666 (2014-04-24 23:00:43+00:00)
Title: [DBAL-801] Add date arithmetic interval methods for seconds, minutes, weeks, quarters and years

This PR adds missing methods for additional date arithmetic interval expression of seconds, minutes, weeks, quarters and years.
Additionally all platforms have been refactored to avoid a lot of code duplication through a more common protected extension point method `AbstractPlatform::getDateArithmeticIntervalExpression()`.