[Relation](
	[ID1] [int] NOT NULL,
	[ID2] [int] NOT NULL,
 CONSTRAINT [PK__Relation] PRIMARY KEY CLUSTERED 
(
	[ID1] ASC,
	[ID2] ASC
)
WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

ALTER TABLE [Relation]  WITH CHECK ADD  CONSTRAINT [CK__Relation__ID1__ID2] CHECK  (([ID1]<=[ID2]))

CREATE NONCLUSTERED INDEX [IX_Relation__ID2__ID1] ON [Relation] 
(
	[ID2] ASC
)
INCLUDE ( [ID1]) WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]