/*Perform a 'USE <database name>' to select the database in which to run the script.*/
-- Declare variables SET NOCOUNT ON DECLARE @tablename VARCHAR (128) DECLARE @execstr VARCHAR (255) DECLARE @objectid INT DECLARE @indexid INT DECLARE @frag DECIMAL DECLARE @maxfrag DECIMAL -- Decide on the maximum fragmentation to allow
SELECT @maxfrag = 30.0 -- Declare cursor
DECLARE tables CURSOR FOR SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE' -- Create the table
CREATE TABLE #fraglist ( ObjectName CHAR (255), ObjectId INT, IndexName CHAR (255), IndexId INT, Lvl INT, CountPages INT, CountRows INT, MinRecSize INT, MaxRecSize INT, AvgRecSize INT, ForRecCount INT, Extents INT, ExtentSwitches INT, AvgFreeBytes INT, AvgPageDensity INT, ScanDensity DECIMAL, BestCount INT, ActualCount INT, LogicalFrag DECIMAL, ExtentFrag DECIMAL) -- Open the cursor
OPEN tables -- Loop through all the tables in the database
FETCH NEXT FROM tables INTO @tablename WHILE @@FETCH_STATUS = 0
BEGIN -- Do the showcontig of all indexes of the table INSERT INTO #fraglist EXEC ('DBCC SHOWCONTIG (''' + @tablename + ''') WITH FAST, TABLERESULTS, ALL_INDEXES, NO_INFOMSGS') FETCH NEXT FROM tables INTO @tablename END -- Close and deallocate the cursor
CLOSE tables DEALLOCATE tables -- Declare cursor for list of indexes to be defragged
DECLARE indexes CURSOR FOR SELECT ObjectName, ObjectId, IndexId, LogicalFrag FROM #fraglist WHERE LogicalFrag >= @maxfrag AND INDEXPROPERTY (ObjectId, IndexName, 'IndexDepth') > 0 -- Open the cursor
OPEN indexes -- loop through the indexes
FETCH NEXT FROM indexes INTO @tablename, @objectid, @indexid, @frag WHILE @@FETCH_STATUS = 0
BEGIN PRINT 'Executing DBCC INDEXDEFRAG (0, ' + RTRIM(@tablename) + ', ' + RTRIM(@indexid) + ') - fragmentation currently ' + RTRIM(CONVERT(varchar(15),@frag)) + '%' SELECT @execstr = 'DBCC INDEXDEFRAG (0, ' + RTRIM(@objectid) + ', ' + RTRIM(@indexid) + ')' EXEC (@execstr) FETCH NEXT
FROM indexes INTO @tablename, @objectid, @indexid, @frag END -- Close and deallocate the cursor
CLOSE indexes DEALLOCATE indexes -- Delete the temporary table
DROP TABLE #fraglist GO |
|
来自: Jason(徐子) > 《Sql server》