DROP INDEX
Name
   DROP INDEX
   --    remove an index
  
Synopsis
DROP INDEX index_name [, ...]
  
    Inputs
   
    
- index_name
- 	The name of an index to remove.
        
   
    Outputs
   
    
- DROP
       
- 	The message returned if the command completes successfully.
        
- ERROR: index "index_name" does not exist
       
- 	This message occurs if index_name
	is not an index in the database.
        
   
   Description
  
   DROP INDEX drops an existing index from the database
   system. To execute this command you must be the owner of
   the index.
  
    Notes
   
    DROP INDEX is a PostgreSQL
    language extension.
   
    Refer to 
    CREATE INDEX
    for information on how to create indexes.
   
   Usage
  
   This command will remove the title_idx index:
   
    DROP INDEX title_idx;
   
  
   Compatibility
  
    SQL92
   
    SQL92 defines commands by which to access
    a generic relational database.
    Indexes are an implementation-dependent feature and hence
    there are no index-specific commands or definitions in the
    SQL92 language.