cakephp/cakephp — pull request #2554 by markstory (2013-12-26 15:34:26+00:00)
Title: 3.0 - Split union into 2 methods.

When writing the docs for unions() I thought it would be much easier to explain and used if we had separate methods for union and unionAll. I find two methods makes reading code simpler as there are fewer boolean arguments floating around.