日期:2014-05-18 浏览次数:20496 次
--结合sys.indexes和sys.index_columns,sys.objects,sys.columns查询索引所属的表或视图的信息 select o.name as 表名, i.name as 索引名, c.name as 列名, i.type_desc as 类型描述, is_primary_key as 主键约束, is_unique_constraint as 唯一约束, is_disabled as 禁用 from sys.objects o inner join sys.indexes i on i.object_id=o.object_id inner join sys.index_columns ic on ic.index_id=i.index_id and ic.object_id=i.object_id inner join sys.columns c on ic.column_id=c.column_id and ic.object_id=c.object_id go --查询索引的键和列信息 select o.name as 表名, i.name as 索引名, c.name as 字段编号, from sysindexes i inner join sysobjects o on i.id=o.id inner join sysindexkeys k on o.id=k.id and i.indid=k.indid inner join syscolumns c on c.id=i.id and k.colid=c.colid where o.name='表名' --查询数据库db中表tb的所有索引的碎片情况 use db go select a.index_id,---索引编号 b.name,---索引名称 avg_fragmentation_in_percent---索引的逻辑碎片 from sys.dm_db_index_physical_stats(db_id(),object_id(N'create.consume'),null,null,null) as a join sys.indexes as b on a.object_id=b.object_id and a.index_id=b.index_id go ---解释下sys.dm_db_indx_physical_stats的参数 datebase_id: 数据库编号,可以使用db_id()函数获取指定数据库名对应的编号。 object_id: 该索引所属表或试图的编号 index_id: 该索引的编号 partition_number:对象中分区的编号 mode:模式名称,用于指定获取统计信息的扫描级别。 有关sys.dm_db_indx_physical_stats的结果集中的字段名去查下联机丛书。
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