SQLSERVER 索引 重建/重组

SELECT    'ALTER INDEX [' + ix.name + '] ON [' + s.name + '].[' + t.name + '] ' +
        CASE WHEN ps.avg_fragmentation_in_percent>15 THEN 'REBUILD' ELSE 'REORGANIZE' END + 
        CASE WHEN pc.partition_count>1 THEN ' PARTITION = ' + CAST(ps.partition_number AS NVARCHAR(MAX))  ELSE '' END,
        avg_fragmentation_in_percent
FROM    sys.indexes AS ix
INNER JOIN sys.tables t ON t.object_id=ix.object_id
INNER JOIN sys.schemas s ON t.schema_id=s.schema_id
INNER JOIN (SELECT    object_id,
                    index_id,
                    avg_fragmentation_in_percent,
                    partition_number
            FROM    sys.dm_db_index_physical_stats(DB_ID(), NULL, NULL, NULL, NULL)) ps ON t.object_id=ps.object_id AND ix.index_id=ps.index_id
INNER JOIN (SELECT    object_id, index_id, COUNT(DISTINCT partition_number) AS partition_count
            FROM    sys.partitions
            GROUP BY object_id, index_id) pc ON t.object_id=pc.object_id AND ix.index_id=pc.index_id
WHERE    ps.avg_fragmentation_in_percent>10 AND ix.name IS NOT NULL;

 

 

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SELECT    OBJECT_NAME(dt.object_id) Tablename, si.name IndexName, dt.avg_fragmentation_in_percent AS ExternalFragmentation,
        dt.avg_page_space_used_in_percent AS InternalFragmentation
FROM    (SELECT    object_id,
                index_id,
                avg_fragmentation_in_percent,
                avg_page_space_used_in_percent
            FROM
                sys.dm_db_index_physical_stats(DB_ID('DB_DJSMS'), NULL, NULL, NULL, 'DETAILED')
            WHERE
                index_id<>0) AS dt
INNER JOIN sys.indexes si ON si.object_id=dt.object_id AND si.index_id=dt.index_id AND dt.avg_fragmentation_in_percent>10 AND dt.avg_page_space_used_in_percent<75
ORDER BY avg_fragmentation_in_percent DESC;