IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[a1]') AND type in (N'U')) BEGIN CREATE TABLE [dbo].[a1]( [a] [int] NOT NULL, [b] [nchar](10) NULL, [c] [int] NULL, CONSTRAINT [PK_a1] PRIMARY KEY CLUSTERED ( [a] ASC )WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY] ) ON [PRIMARY] END