IF NOT EXISTS(SELECT * FROM sys.columns WHERE object_id = OBJECT_ID(N'[dbo].[CSAPP_CUSTOMER_REL_STATION]'))
CREATE TABLE [dbo].[CSAPP_CUSTOMER_REL_STATION](
    pk INT PRIMARY KEY IDENTITY(1,1) NOT NULL,
    Kunde INT  NOT NULL,
    Station VARCHAR(30)  NOT NULL
);