SQL SERVER 重建索引、 查询索引碎片实例讲解

 1 use DATA _NAME;
 2 
 3 DECLARE @TableName VARCHAR(255)
 4 DECLARE @sql NVARCHAR(500)
 5 DECLARE @fillfactor INT
 6 SET @fillfactor = 80
 7 DECLARE TableCursor CURSOR FOR
 8 SELECT  _SCHEMA_NAME([ _id])+'.['+name+']' AS TableName
 9 FROM sys.tables w
10 OPEN TableCursor
11 FETCH NEXT FROM TableCursor INTO @TableName
12 WHILE @@FETCH_STATUS = 0
13 BEGIN
14 SET @sql = 'ALTER INDEX ALL ON ' + @TableName + ' REBUILD WITH (ONLINE=off,FILLFACTOR=80);' --' REBUILD WITH (FILLFACTOR = ' + CONVERT(VARCHAR(3),@fillfactor) + ')'
15 exec (@sql)
16 FETCH NEXT FROM TableCursor INTO @TableName
17 END
18 CLOSE TableCursor
19 DEALLOCATE TableCursor
20 GO

use DATA _NAME;
SELECT dbschemas.[name] as 'Schema', 
dbtables.[name] as 'Table', 
dbindexes.[name] as 'Index',
indexstats.alloc_unit_type_desc,
indexstats.avg_fragmentation_in_percent,
indexstats.page_count
FROM sys.dm_db_index_physical_stats (DB_ID(), NULL, NULL, NULL, NULL) AS indexstats
INNER JOIN sys.tables dbtables on dbtables.[ _id] = indexstats.[ _id]
INNER JOIN sys.schemas dbschemas on dbtables.[schema_id] = dbschemas.[schema_id]
INNER JOIN sys.indexes AS dbindexes ON dbindexes.[ _id] = indexstats.[ _id]
AND indexstats.index_id = dbindexes.index_id
WHERE indexstats.data _id = DB_ID() and dbindexes.[name] not like 'pk_%'
ORDER BY indexstats.avg_fragmentation_in_percent * page_count desc