Now I see, should have set primary keys on both columns (id, date).
CREATE TABLE [dbo].[tbl_zaua_1_11](
[id] [int] NOT NULL,
[date] [datetime] NOT NULL,
CONSTRAINT [PK_tbl_zaua_1_11] PRIMARY KEY CLUSTERED
(
[id] ASC,
[date] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[tbl_zaua_1_11] WITH CHECK ADD CONSTRAINT [CK_tbl_zaua_1_11]
CHECK (([date]<'2014-01-12 00:00:00.000' AND [date]>'2014-01-10 00:00:00.000'))
GO
ALTER TABLE [dbo].[tbl_zaua_1_11] CHECK CONSTRAINT [CK_tbl_zaua_1_11]
GO
Thanks anyway!