IF NOT EXISTS (SELECT 1 FROM sys.objects WHERE object_id = OBJECT_ID('[dbo].[mps_prd_unit]') AND type = 'U')
CREATE TABLE [dbo].[mps_prd_unit]
(
    [prdu_prdid] int NOT NULL DEFAULT((0)),
    [prdu_unit] nvarchar(20) COLLATE Chinese_PRC_CI_AS NOT NULL DEFAULT(''),
    [prdu_ratio] int NULL DEFAULT((1)),
    CONSTRAINT [PK_mps_prd_unit_1] PRIMARY KEY ([prdu_prdid] ASC,[prdu_unit] ASC)
)