Generate Index scripts for whole DB

--###################################################
--1. get all indexes from current db, place in temp table
select tablename = object_name(i.id),tableid = i.id,indexid = i.indid,indexname = i.name,
i.status,isunique = indexproperty (i.id,i.name,'isunique'),
isclustered = indexproperty (i.id,i.name,'isclustered'),
indexfillfactor = indexproperty (i.id,i.name,'indexfillfactor')
into #tmp_indexes
from sysindexes i
where i.indid > 0 and i.indid < 255                     --not certain about this
and (i.status & 64) = 0                                 --existing indexes
--add additional columns to store include and key column lists
alter table #tmp_indexes add keycolumns varchar(4000), includes varchar(4000)
GO


--###################################################
--2. loop through tables, put include and index columns into variables
declare @isql_key varchar(4000), @isql_incl varchar(4000), @tableid int, @indexid int
declare index_cursor cursor for
select tableid, indexid from #tmp_indexes 
open index_cursor
fetch next from index_cursor into @tableid, @indexid
while @@fetch_status <> -1
begin
   
select @isql_key = '', @isql_incl = ''
 
select --i.name, sc.colid, sc.name, ic.index_id, ic.object_id, *       
--key column       
@isql_key = case ic.is_included_column
when 0 then               
case ic.is_descending_key                  
when 1 then @isql_key + coalesce(sc.name,'') + ' DESC, '                   
else        @isql_key + coalesce(sc.name,'') + ' ASC, '            
end        
else @isql_key end,
--include column       
@isql_incl = case ic.is_included_column            
when 1 then               
case ic.is_descending_key                  
when 1 then @isql_incl + coalesce(sc.name,'') + ', '                  
else @isql_incl + coalesce(sc.name,'') + ', '             
end        
else @isql_incl end
from sysindexes i  
INNER JOIN sys.index_columns AS ic ON (ic.column_id > 0 and (ic.key_ordinal > 0 or ic.partition_ordinal = 0 or ic.is_included_column != 0)) AND (ic.index_id=CAST(i.indid AS int) AND ic.object_id=i.id)
INNER JOIN sys.columns AS sc ON sc.object_id = ic.object_id and sc.column_id = ic.column_id
where i.indid > 0 and i.indid < 255  
and (i.status & 64) = 0
and i.id = @tableid and i.indid = @indexid 
order by i.name, case ic.is_included_column when 1 then ic.index_column_id else ic.key_ordinal end

if len(@isql_key) > 1    set @isql_key   = left(@isql_key,  len(@isql_key) -1)
  
if len(@isql_incl) > 1   set @isql_incl  = left(@isql_incl, len(@isql_incl) -1)
 
update #tmp_indexes    
set keycolumns = @isql_key,    
includes = @isql_incl  
where tableid = @tableid and indexid = @indexid

fetch next from index_cursor into @tableid,@indexid

end
close index_cursor
deallocate index_cursor
--remove invalid indexes,ie ones without key columns
delete from #tmp_indexes where keycolumns = ''


--###################################################
--3. output the index creation scripts
set nocount on
--separator
select '---------------------------------------------------------------------'
--create index scripts (for backup)
SELECT     
'CREATE '  
+ CASE WHEN ISUNIQUE    = 1 THEN 'UNIQUE ' ELSE '' END 
+ CASE WHEN ISCLUSTERED = 1 THEN 'CLUSTERED ' ELSE '' END  
+ 'INDEX [' + INDEXNAME + ']'  
+' ON [' + TABLENAME + '] '
+ '(' + keycolumns + ')'   
+ CASE     
WHEN INDEXFILLFACTOR = 0 AND ISCLUSTERED = 1 AND INCLUDES = '' THEN ''     
WHEN INDEXFILLFACTOR = 0 AND ISCLUSTERED = 0 AND INCLUDES = '' THEN ' WITH (ONLINE = ON)'      
WHEN INDEXFILLFACTOR <> 0 AND ISCLUSTERED = 0 AND INCLUDES = '' THEN ' WITH (ONLINE = ON, FILLFACTOR = ' + CONVERT(VARCHAR(10),INDEXFILLFACTOR) + ')'
WHEN INDEXFILLFACTOR = 0 AND ISCLUSTERED = 0 AND INCLUDES <> '' THEN ' INCLUDE (' + INCLUDES + ') WITH (ONLINE = ON)'
ELSE ' INCLUDE(' + INCLUDES + ') WITH (FILLFACTOR = ' + CONVERT(VARCHAR(10),INDEXFILLFACTOR) + ', ONLINE = ON)' 
END
FROM #tmp_indexes
where left(tablename,3) not in ('sys', 'dt_')   --exclude system tables
order by tablename, indexid, indexname
set nocount off
--drop table #tmp_indexes