declare @ix table(index_handle int,eq nvarchar(4000),included_columns nvarchar(4000),name varchar(100),dbname varchar(30))
;with idx as(
select a.index_handle ,a.equality_columns,a.inequality_columns,a.equality_columns+case when a.inequality_columns is null then '' else ','+a.inequality_columns end as eq ,a.included_columns,b.name,c.name dbname
from sys.[dm_db_missing_index_details] a
inner join sysobjects b on a.object_id=b.id
inner join master..sysdatabases c on c.dbid=a.database_id
where a.equality_columns>''
union all
select a.index_handle ,a.equality_columns,a.inequality_columns,case when a.inequality_columns is null then '' else a.inequality_columns end as eq ,a.included_columns,b.name,c.name dbname
from sys.[dm_db_missing_index_details] a
inner join sysobjects b on a.object_id=b.id --預設當前的資料庫
inner join master..sysdatabases c on c.dbid=a.database_id
where a.equality_columns is null
),ind1 as(
select index_handle,eq,included_columns,name,dbname
,(select count(1) from sys.[dm_db_missing_index_columns](index_handle) where column_usage<>'include' )leng
,(select count(1) from sys.[dm_db_missing_index_columns](index_handle) where column_usage='include' )leng1
from idx
),ind2 as( select row_number() over(partition by name order by leng desc,leng1 desc ) as rownum,* from ind1)
insert into @ix(index_handle,eq,included_columns,name,dbname)
select index_handle,eq,included_columns,name,dbname from ind2 where rownum=1
declare @sql table(strsql nvarchar(3000))
insert into @sql( strsql )
select
' use ['+dbname+']'+char(13)+char(10)
+' create nonclustered index ix_'+name+'_'+cast(index_handle as varchar(10))+char(13)+char(10)
+' on [dbo].['+name+'] ('+eq+')'+char(13)+char(10)
+ case when included_columns is null then '' else ' include('+included_columns+')'+char(13)+char(10) end
from @ix
declare @cursql nvarchar(3000)=''
declare idx_cursor cursor --定義游標
for (select strsql from @sql) --查出需要的集合放到游標中
open idx_cursor; --開啟游標
fetch next from idx_cursor into @cursql ; --讀取第一行資料
while @@fetch_status = 0
begin
print(@cursql) --輸出
--exec(@cursql);--執行
fetch next from idx_cursor into @cursql; --讀取下一行資料
endclose idx_cursor; --關閉游標
deallocate idx_cursor; --釋放游標
select strsql as content from @sql
go
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