remove_column migration no longer works

[dball]

When I try to remove_column on an nvarchar column with no null constraint and no default, I get an error trying to convert a String to an Integer on line 1040 of the sqlserver_adapter.rb. It looks like the stored proc is returning a hash inside a doubly nested array, while the original code expected a hash inside a single array?

Note to self, I think this is related to the sp_helpconstraint procedure returning a 2D array that potentially reports FK's too. So if it is a 2D array, then we need to pick the first set.

[metaskills]

I ran into this yesterday. Made the following 2 commits to fix it, unreleased so far but will be in the next versions.

58aa3d3

656f1a2