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SQL Server FAQ - DROP INDEX - Removing Existing Indexes

By: FYIcenter.com

(Continued from previous topic...)

How To Drop Existing Indexes?

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 "fyi_links_id":

USE FyiCenterData;
GO

SELECT * FROM sys.indexes WHERE object_id = (
   SELECT object_id FROM sys.tables WHERE name = 'fyi_links'
);
GO
object_id  name           index_id  type_desc     is_unique
---------  -------------  --------  ----------    ---------
421576540  NULL           0         HEAP          0
421576540  fyi_links_id   2         NONCLUSTERED  0
421576540  fyi_links_url  3         NONCLUSTERED  0

DROP INDEX fyi_links.fyi_links_id;
GO

SELECT * FROM sys.indexes WHERE object_id = (
   SELECT object_id FROM sys.tables WHERE name = 'fyi_links'
);
GO
object_id  name           index_id  type_desc     is_unique
---------  -------------  --------  ----------    ---------
421576540  NULL           0         HEAP          0
421576540  fyi_links_url  3         NONCLUSTERED  0

(Continued on next topic...)

  1. What Are Indexes?
  2. How To Create an Index on an Existing Table?
  3. How To View Existing Indexes on an Given Table using SP_HELP?
  4. How To View Existing Indexes on an Given Table using sys.indexes?
  5. How To Drop Existing Indexes?
  6. Is the PRIMARY KEY Column of a Table an Index?
  7. Does the UNIQUE Constraint Create an Index?
  8. What Is the Difference Between Clustered and Non-Clustered Indexes?
  9. How To Create a Clustered Index?
  10. How To Create an Index for Multiple Columns?
  11. How To Create a Large Table with Random Data for Index Testing?
  12. How To Measure Performance of INSERT Statements?
  13. Does Index Slows Down INSERT Statements?
  14. Does Index Speed Up SELECT Statements?
  15. What Happens If You Add a New Index to Large Table?
  16. What Is the Impact on Other User Sessions When Creating Indexes?
  17. What Is Index Fragmentation?
  18. What Causes Index Fragmentation?
  19. How To Defragment Table Indexes?
  20. How To Defragment Indexes with ALTER INDEX ... REORGANIZE?
  21. How To Rebuild Indexes with ALTER INDEX ... REBUILD?
  22. How To Rebuild All Indexes on a Single Table?
  23. How To Recreate an Existing Index?

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