laravel/framework — pull request #4181 by MacTEC (2014-04-18 08:24:47+00:00)
Title: Updated SqlServer grammar date format. Fixes #2591 #2235

Previous format (`Y-m-d H:i:s.000`) caused 'The format separator does not match' error when a DateTime string with non-zero millisecond value was supplied.

Note that although `u` in the format stands for microseconds rather than milliseconds, it does not make any difference as Carbon does not support fraction of a second anyway.