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我一直在開發查詢以使用DMV獲取索引碎片信息。T-SQL查詢獲取索引碎片信息
但是,查詢給出的結果比預期的要多。我相信問題在於聯結。
有什麼想法?
select distinct '['+DB_NAME(database_id)+']' as DatabaseName,
'['+DB_NAME(database_id)+'].['+sch.name+'].['
+ OBJECT_NAME(ips.object_id)+']' as TableName,
i.name as IndexName,
ips.index_type_desc as IndexType,
avg_fragmentation_in_percent as avg_fragmentation,
SUM(row_count) as Rows
FROM
sys.indexes i INNER JOIN
sys.dm_db_index_physical_stats(NULL,NULL,NULL,NULL,'LIMITED') ips ON
i.object_id = ips.object_id INNER JOIN
sys.tables tbl ON tbl.object_id = ips.object_id INNER JOIN
sys.schemas sch ON sch.schema_id = tbl.schema_id INNER JOIN
sys.dm_db_partition_stats ps ON ps.object_id = ips.object_id
WHERE
avg_fragmentation_in_percent <> 0.0 AND ips.database_id = 6
AND OBJECT_NAME(ips.object_id) not like '%sys%'
GROUP BY database_id, sch.name, ips.object_id, avg_fragmentation_in_percent,
i.name, ips.index_type_desc
ORDER BY avg_fragmentation_in_percent desc