Created
September 23, 2015 04:32
-
-
Save swasheck/063063b37266f5eb5ee9 to your computer and use it in GitHub Desktop.
SQL Server Duplicate Statistics Finder
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
with x as ( | |
select | |
stats_generation_number = row_number() over (partition by base.object_id, base.stat_cols, base.filter_definition order by base.is_index desc), | |
* | |
from ( | |
select | |
o.object_id, | |
s.stats_id, | |
schema_name = sh.name, | |
object_name = o.name, | |
stat_name = s.name, | |
is_index = case when i.name is null then 0 else 1 end, | |
s.has_filter, | |
s.filter_definition, | |
stat_cols = stuff( | |
( | |
select ',' + index_col(db_name(db_id()) + '.' + quotename(sh.name) + '.' + quotename(o.name),sc.stats_id,sc.stats_column_id) | |
from sys.stats_columns sc | |
where s.object_id = sc.object_id | |
and s.stats_id = sc.stats_id | |
for xml path('') | |
),1,1,'' --eliminates NULL column names which (in my environment) are reducible to partition key injection | |
) | |
from sys.stats s | |
join sys.objects o | |
on s.object_id = o.object_id | |
join sys.schemas sh | |
on o.schema_id = sh.schema_id | |
left join sys.indexes i | |
on s.object_id = i.object_id | |
and s.name = i.name | |
where sh.name != 'sys' | |
) base | |
) | |
select * | |
from x | |
where x.stats_generation_number > 1 | |
and x.is_index = 0 | |
order by object_id |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment