ALTER TABLE Training_TestRecordItem ADD AnswerTime DATETIME NULL
GO

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'´ðÌâʱ¼ä' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'Training_TestRecordItem', @level2type=N'COLUMN',@level2name=N'AnswerTime'
GO