SQLServer查询当前数据库所有索引及统计，并使用游标批量删除

--查询现有所有数据库表的索引情况
Select indexs.Tab_Name As [表名],indexs.Index_Name As [索引名] ,indexs.[Co_Names] As [索引列],
Ind_Attribute.is_primary_key As [是否主键],Ind_Attribute.is_unique As [是否唯一键],
Ind_Attribute.is_disabled As [是否禁用]
From (
Select Tab_Name,Index_Name, [Co_Names]=stuff((Select '，'+[Co_Name] From
( Select tab.Name As Tab_Name,ind.Name As Index_Name,Col.Name As Co_Name From sys.indexes ind
Inner Join sys.tables tab on ind.Object_id = tab.object_id And ind.type in (1,2)
Inner Join sys.index_columns index_columns on tab.object_id = index_columns.object_id And ind.index_id = index_columns.index_id
Inner Join sys.columns Col on tab.object_id = Col.object_id And index_columns.column_id = Col.column_id
) t Where Tab_Name=tb.Tab_Name And Index_Name=tb.Index_Name for xml path('')), 1, 1, '')
From (
Select tab.Name As Tab_Name,ind.Name As Index_Name,Col.Name As Co_Name From sys.indexes ind
Inner Join sys.tables tab on ind.Object_id = tab.object_id And ind.type in (1,2)
Inner Join sys.index_columns index_columns on tab.object_id = index_columns.object_id And ind.index_id = index_columns.index_id
Inner Join sys.columns Col on tab.object_id = Col.object_id And index_columns.column_id = Col.column_id
)tb
Where Tab_Name not like 'sys%'
Group By Tab_Name,Index_Name
) indexs Inner Join sys.indexes Ind_Attribute on indexs.Index_Name = Ind_Attribute.name
Order By indexs.Tab_Name
 
 
--删除所有非主键索引
Declare @Tab_Name Varchar(200)
Declare @Index_Name Varchar(200)
 
Declare C_DelIndex Cursor Fast_Forward For
Select indexs.Tab_Name,indexs.Index_Name
From (
Select Tab_Name,Index_Name, [Co_Names]=stuff((Select '，'+[Co_Name] From
( Select tab.Name As Tab_Name,ind.Name As Index_Name,Col.Name As Co_Name From sys.indexes ind
Inner Join sys.tables tab on ind.Object_id = tab.object_id And ind.type in (1,2)
Inner Join sys.index_columns index_columns on tab.object_id = index_columns.object_id And ind.index_id = index_columns.index_id
Inner Join sys.columns Col on tab.object_id = Col.object_id And index_columns.column_id = Col.column_id
) t Where Tab_Name=tb.Tab_Name And Index_Name=tb.Index_Name for xml path('')), 1, 1, '')
From (
Select tab.Name As Tab_Name,ind.Name As Index_Name,Col.Name As Co_Name From sys.indexes ind
Inner Join sys.tables tab on ind.Object_id = tab.object_id And ind.type in (1,2)
Inner Join sys.index_columns index_columns on tab.object_id = index_columns.object_id And ind.index_id = index_columns.index_id
Inner Join sys.columns Col on tab.object_id = Col.object_id And index_columns.column_id = Col.column_id
)tb
Where Tab_Name not like 'sys%'
Group By Tab_Name,Index_Name
) indexs Inner Join sys.indexes Ind_Attribute on indexs.Index_Name = Ind_Attribute.name
Where Ind_Attribute.is_primary_key = 0
Order By indexs.Tab_Name
 
Open C_DelIndex
 
Fetch Next From C_DelIndex Into @Tab_Name , @Index_Name
While @@Fetch_Status = 0
    Begin
        Exec('DROP INDEX ' + @Index_Name + ' ON ' + @Tab_Name)
        Fetch Next From C_DelIndex Into @Tab_Name , @Index_Name
    End
Close C_DelIndex
Deallocate C_DelIndex

--查询现有所有数据库表的统计情况
Select statss.Tab_Name As [表名],statss.Stat_Name As [统计名] ,statss.[Co_Names] As [统计列],
Sta_Attribute.auto_created As [自动创建],Sta_Attribute.user_created As [用户创建]
From (
Select Tab_Name,Stat_Name, [Co_Names]=stuff((Select '，'+[Co_Name] From
( 
Select tab.Name As Tab_Name,sta.Name As Stat_Name,Col.Name As Co_Name From sys.stats sta
Inner Join sys.tables tab on sta.Object_id = tab.object_id 
Inner Join sys.stats_columns stat_columns on tab.object_id = stat_columns.object_id And sta.stats_id = stat_columns.stats_id
Inner Join sys.columns Col on tab.object_id = Col.object_id And stat_columns.column_id = Col.column_id
) t Where Tab_Name=tb.Tab_Name And Stat_Name=tb.Stat_Name for xml path('')), 1, 1, '')
From (
Select tab.Name As Tab_Name,sta.Name As Stat_Name,Col.Name As Co_Name From sys.stats sta
Inner Join sys.tables tab on sta.Object_id = tab.object_id 
Inner Join sys.stats_columns stat_columns on tab.object_id = stat_columns.object_id And sta.stats_id = stat_columns.stats_id
Inner Join sys.columns Col on tab.object_id = Col.object_id And stat_columns.column_id = Col.column_id
)tb
Where Tab_Name not like 'sys%'
Group By Tab_Name,Stat_Name
) statss Inner Join sys.stats Sta_Attribute on statss.Stat_Name = Sta_Attribute.name
Order By statss.Tab_Name


--删除所有用户创建统计
Declare @Tab_Name Varchar(200)
Declare @Stat_Name Varchar(200)

Declare C_DelStat Cursor Fast_Forward For 
Select statss.Tab_Name ,statss.Stat_Name 
From (
Select Tab_Name,Stat_Name, [Co_Names]=stuff((Select '，'+[Co_Name] From
( 
Select tab.Name As Tab_Name,sta.Name As Stat_Name,Col.Name As Co_Name From sys.stats sta
Inner Join sys.tables tab on sta.Object_id = tab.object_id 
Inner Join sys.stats_columns stat_columns on tab.object_id = stat_columns.object_id And sta.stats_id = stat_columns.stats_id
Inner Join sys.columns Col on tab.object_id = Col.object_id And stat_columns.column_id = Col.column_id
) t Where Tab_Name=tb.Tab_Name And Stat_Name=tb.Stat_Name for xml path('')), 1, 1, '')
From (
Select tab.Name As Tab_Name,sta.Name As Stat_Name,Col.Name As Co_Name From sys.stats sta
Inner Join sys.tables tab on sta.Object_id = tab.object_id 
Inner Join sys.stats_columns stat_columns on tab.object_id = stat_columns.object_id And sta.stats_id = stat_columns.stats_id
Inner Join sys.columns Col on tab.object_id = Col.object_id And stat_columns.column_id = Col.column_id
)tb
Where Tab_Name not like 'sys%'
Group By Tab_Name,Stat_Name
) statss Inner Join sys.stats Sta_Attribute on statss.Stat_Name = Sta_Attribute.name
Where Sta_Attribute.user_created = 1
Order By statss.Tab_Name

Open C_DelStat

Fetch Next From C_DelStat Into @Tab_Name , @Stat_Name
While @@Fetch_Status = 0
    Begin
        Exec('DROP STATISTICS ' + @Tab_Name + '.' + @Stat_Name)
        Fetch Next From C_DelStat Into @Tab_Name , @Stat_Name
    End
Close C_DelStat
Deallocate C_DelStat