MS SQL Server Interview Question:

How To Drop Existing Indexes in MS SQL Server?

Submitted by: Administrator

For some reason, if you want remove an existing index, you can use the DROP INDEX statement with following syntax:

CREATE INDEX table_name.index_name

The tutorial exercise below shows you how to remove the index "ggl_links_id":

USE GlobalGuideLineDatabase;
GO

SELECT * FROM sys.indexes WHERE object_id = (
SELECT object_id FROM sys.tables WHERE name = 'ggl_links'
);
GO
<pre>object_id name index_id type_desc is_unique
--------- ------------- -------- ---------- ---------
421576540 NULL 0 HEAP 0
421576540 ggl_links_id 2 NONCLUSTERED 0
421576540 ggl_links_url 3 NONCLUSTERED 0</pre>

DROP INDEX ggl_links.ggl_links_id;
GO

SELECT * FROM sys.indexes WHERE object_id = (
SELECT object_id FROM sys.tables WHERE name = 'ggl_links'
);
GO
<pre>object_id name index_id type_desc is_unique
--------- ------------- -------- ---------- ---------
421576540 NULL 0 HEAP 0
421576540 ggl_links_url 3 NONCLUSTERED 0</pre>
Submitted by: Administrator