查看SQL索引碎片

SELECT i.name                           AS indexname,
         o.name                           AS tablename,
         s.name                           AS schemaname,
         f.index_type_desc                AS indextype,
         f.avg_page_space_used_in_percent AS indexdensity,
         f.avg_fragmentation_in_percent   AS indexfragmentation,
         f.page_count                     AS pages
    FROM sys.dm_db_index_physical_stats(DB_ID(), NULL, NULL, NULL, 'SAMPLED') f
         INNER JOIN sys.objects o ON o.object_id = f.object_id
         INNER JOIN sys.schemas s ON o.schema_id = s.schema_id
         INNER JOIN sys.indexes i ON f.object_id = i.object_id AND f.index_id = i.index_id
   WHERE page_count > 50
     AND f.index_id > 0
ORDER BY o.name, i.index_id