rails/rails — pull request #15237 by sgrif (2014-05-21 21:50:10+00:00)
Title: Move extract_scale to decimal type

The only type that has a scale is decimal. There's a special case where
decimal columns with 0 scale are type cast to integers if the scale is
not specified. Appears to only affect schema dumping. Would prefer to
see the scale not be specified, and modify the test instead, but wanted
some feedback on the two choices.