Ricostruzione indici su Sql Server (REBUILD INDEX)

Sulle versioni Express di SqlServer non è presente la manutenzione del database dove è possibile fare un rebuild di tutti gli indici del database.

Di seguito uno script da eseguire manualmente o inserire nello script di backup.

Lo script fa un rebuild di tutti gli indici di tutti i database user, escludendo quindi i database di sistema.

fonte : http://www.mssqltips.com/sqlservertip/1367/sql-server-script-to-rebuild-all-indexes-for-all-tables-and-all-databases/

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DECLARE @Database VARCHAR(255)  
DECLARE @Table VARCHAR(255)  
DECLARE @cmd NVARCHAR(500)  
DECLARE @fillfactor INT

SET @fillfactor = 90

DECLARE DatabaseCursor CURSOR FOR  
SELECT name FROM master.dbo.sysdatabases  
WHERE name NOT IN ('master','msdb','tempdb','model','distribution')  
ORDER BY 1  

OPEN DatabaseCursor  

FETCH NEXT FROM DatabaseCursor INTO @Database  
WHILE @@FETCH_STATUS = 0  
BEGIN  

   SET @cmd = 'DECLARE TableCursor CURSOR FOR SELECT ''['' + table_catalog + ''].['' + table_schema + ''].['' +
  table_name + '']'' as tableName FROM [' + @Database + '].INFORMATION_SCHEMA.TABLES
  WHERE table_type = ''BASE TABLE'''  

   -- create table cursor  
   EXEC (@cmd)  
   OPEN TableCursor  

   FETCH NEXT FROM TableCursor INTO @Table  
   WHILE @@FETCH_STATUS = 0  
   BEGIN  
       IF (@@MICROSOFTVERSION / POWER(2, 24) >= 9)
       BEGIN
           -- SQL 2005 or higher command
           SET @cmd = 'ALTER INDEX ALL ON ' + @Table + ' REBUILD WITH (FILLFACTOR = ' + CONVERT(VARCHAR(3),@fillfactor) + ')'
           EXEC (@cmd)
       END
       ELSE
       BEGIN
          -- SQL 2000 command
          DBCC DBREINDEX(@Table,' ',@fillfactor)  
       END

       FETCH NEXT FROM TableCursor INTO @Table  
   END  

   CLOSE TableCursor  
   DEALLOCATE TableCursor  

   FETCH NEXT FROM DatabaseCursor INTO @Database  
END  
CLOSE DatabaseCursor  
DEALLOCATE DatabaseCursor 

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