SQL 2005 re-enable nonclustered index ?

Question

Hello, what's the syntax to re-enable a nonclustered index that was disable?
And after the index is back up online does it's fragmentation remain the same prior being disabled or does fragmentation gets cleared-rebuilt ?
Thanks in advance.

Answer 1

How to Enable and Disable Indexes for
2005
When an index is disabled, you can enable it by either rebuilding the index or re-creating the index. When a clustered index is disabled,
nonclustered indexes for the table are automatically disabled, too. When the clustered index is rebuilt or re-created, the nonclustered indexes are not automatically enabled unless the option to rebuild all indexes is used.
Follow these steps to enable the
clustered index on the your database table located in your Database let's say your database is AdventureWorks
From within SQL Server Management Studio, expand
SQL01\INSTANCE01, Databases, AdventureWorks, and then Tables . Expand your table you wish to workon
Expand the Indexes folder located beneath
your table. Right-click the Index (e.g. PK_Address_AddressID) and select
Rebuild.
 When the Rebuild Index window opens, verify that the correct index is listed and then click
OK. When the clustered index has been rebuilt, the data can once again be queried.
NOTE:
However, in YOUR CASE the NONCLUSTERED INDEXES CANNOT be selected by the query\ optimizer because they need to be enabled individually. You can use the same procedure to ENABLE each NONCLUSTERED index. Alternatively, you can use the following code to
rebuild all indexes on the table, YOU WILL EFFECTIVELY ENABLING EACH INDEX AS THE REBUILD IS COMPETE: 
USE [AdventureWorks]
GO
ALTER INDEX
ALL ON [Person].[Address]
REBUILD
GO
How to Enable and Disable Indexes for
2008
USE AdventureWorks
GO
----Diable Index
ALTER INDEX [IX_StoreContact_ContactTypeID] ON Sales.StoreContact DISABLE
GO
----Enable Index
ALTER INDEX [IX_StoreContact_ContactTypeID] ON Sales.StoreContact REBUILD
GO
Update Table Columns 
I hope this will help you a lot goodluck!!
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