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how do I alter table to remove unique field

Posted on 2013-11-04
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Last Modified: 2013-11-08
SET QUOTED_IDENTIFIER ON
GO
I have the following table.  How do I alter the table to remove unique from field ViewName by iteself.

IDRoleApps and ViewName together is fine.


CREATE TABLE [dbo].[ViewName](
      [IDViewName] [bigint] IDENTITY(1,1) NOT NULL,
      [ViewName] [nvarchar](50) NOT NULL,
      [ViewType] [nvarchar](50) NOT NULL,
      [ViewDescription] [nvarchar](255) NOT NULL,
      [IDRolesApps] [bigint] NULL,
 CONSTRAINT [ViewName_PrimaryKey] PRIMARY KEY CLUSTERED
(
      [IDViewName] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY],
 CONSTRAINT [IDViewName] UNIQUE NONCLUSTERED
(
      [ViewName] ASC,
      [IDRolesApps] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY],
UNIQUE NONCLUSTERED
(
      [ViewName] 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
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Question by:goodk
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9 Comments
 
LVL 22

Expert Comment

by:Kelvin Sparks
ID: 39622976
It appears to be added as a Unique Index and without a name supplied by the code. I suspect it will have a system generated name which you will have to retrieve and  then use to drop the Indie (or possibly a constraint).


Kelvin
0
 

Author Comment

by:goodk
ID: 39623257
Hi Kelvin,

How do i find the unique index? and then how do i use it to alter the table to remove unique index from Viewname field?
0
 

Author Comment

by:goodk
ID: 39623264
Hi Kelvin,

How do i find the system generated name? and then how do i use it to alter the table to remove unique index from Viewname field?
0
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LVL 22

Expert Comment

by:Kelvin Sparks
ID: 39623267
Do you have access to the database itself via SSMS?
0
 

Author Comment

by:goodk
ID: 39623272
I am using MS sql server management studio and I can run queries on the sql db.
0
 
LVL 22

Expert Comment

by:Kelvin Sparks
ID: 39623281
OK, open the table in design, right click in and empty part of the designer and choose Indexes.

Review those list - lick each in turn on the left and see which fields are included in the right hand panel. The names on the left are the Index (or constraint names). You can delete it there by selecting it and deleting or using the syntax

ALTER TABLE tablename DROP CONSTRAINT indexname

Kelvin
0
 

Author Comment

by:goodk
ID: 39623298
It is a shared db so can see the design but cannot interact or modify it.

Alter table commands would work.
0
 
LVL 22

Accepted Solution

by:
Kelvin Sparks earned 500 total points
ID: 39623309
OK, use the management studio to see the index as described above, then use the name in the statement supplied above.


Kelvin
0
 

Author Closing Comment

by:goodk
ID: 39634686
thanks
0

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