Add Find_Status_of_SQL_Server_Statistics script

Thanks to Taiob Ali

Author: ktaranov

Scripts/Find_Status_of_SQL_Server_Statistics.sql

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+/*
+Author: Taiob Ali
+Original link: http://sqlworldwide.com/tsql-to-find-status-of-sql-server-statistics/
+
+This code is a modified or extended version of a script from here:
+--http://www.sqlskills.com/blogs/erin/new-statistics-dmf-in-sql-server-2008r2-sp2/
+
+This script will give all metadata related to statistics for a single database.
+You can also uncomment a line and add an object name for a single table.
+
+Final challenge was to get one row per statistics with all column names. Used the tips from
+https://www.mssqltips.com/sqlservertip/2914/rolling-up-multiple-rows-into-a-single-row-and-column-for-sql-server-data/
+
+Suneel Mundlapudi who is a Sr. SQL Server Database Consultant at Fresenius Medical Care helped me implementing STUFF function
+*/
+
+/* Change on your database name */
+USE master;
+GO
+
+IF Object_id('tempdb..#StatsInfo') IS NOT NULL
+  DROP TABLE #StatsInfo;
+GO
+
+IF Object_id('tempdb..#ColumnList') IS NOT NULL
+  DROP TABLE #ColumnList;
+GO
+
+DECLARE @object_id INT = NULL;
+
+--By default you get statistics status for whole database
+--Uncomment below line if you are only looking at one table
+--SET @object_id = OBJECT_ID(N'Sales.Invoices');
+SELECT ss.[name]                 AS SchemaName,
+       obj.[name]                AS TableName,
+       stat.[stats_id],
+       stat.[name]               AS StatisticsName,
+       CASE
+         WHEN stat.[auto_created] = 0
+              AND stat.[user_created] = 0 THEN 'Index Statistic'
+         WHEN stat.[auto_created] = 0
+          AND stat.[user_created] = 1 THEN 'User Created'
+         WHEN stat.[auto_created] = 1
+          AND stat.[user_created] = 0 THEN 'Auto Created'
+         WHEN stat.[auto_created] = 1
+          AND stat.[user_created] = 1 THEN 'Updated stats available in Secondary'
+       END                       AS StatisticType,
+       CASE
+         WHEN stat.[is_temporary] = 0 THEN 'Stats in DB'
+         WHEN stat.[is_temporary] = 1 THEN 'Stats in Tempdb'
+       END                       AS IsTemporary,
+       CASE
+         WHEN stat.[has_filter] = 1 THEN 'Filtered Index'
+         WHEN stat.[has_filter] = 0 THEN 'No Filter'
+       END                       AS IsFiltered,
+       c.[name]                  AS ColumnName,
+       stat.[filter_definition],
+       sp.[last_updated],
+       sp.[rows],
+       sp.[rows_sampled],
+       sp.[steps]                AS HistorgramSteps,
+       sp.[unfiltered_rows],
+       sp.[modification_counter] AS RowsModified
+INTO   #StatsInfo
+FROM   sys.[objects] AS obj
+       INNER JOIN sys.[schemas] ss
+               ON obj.[schema_id] = ss.[schema_id]
+       INNER JOIN sys.[stats] stat
+               ON stat.[object_id] = obj.[object_id]
+       JOIN sys.[stats_columns] sc
+         ON sc.[object_id] = stat.[object_id]
+            AND sc.[stats_id] = stat.[stats_id]
+       JOIN sys.columns c
+         ON c.[object_id] = sc.[object_id]
+            AND c.[column_id] = sc.[column_id]
+       CROSS apply sys.dm_db_stats_properties(stat.[object_id], stat.stats_id) AS
+                   sp
+WHERE  ( obj.[is_ms_shipped] = 0
+         AND obj.[object_id] = @object_id )
+        OR ( obj.[is_ms_shipped] = 0 )
+ORDER  BY ss.[name],
+          obj.[name],
+          stat.[name];
+
+SELECT t.SchemaName,
+       t.TableName,
+       t.[stats_id],
+       STUFF((SELECT ',' + s.ColumnName
+              FROM   #StatsInfo s
+              WHERE  s.SchemaName = t.SchemaName
+                 AND s.TableName  = t.TableName
+                 AND s.stats_id   = t.stats_id
+              FOR xml path('')), 1, 1, '')
+         AS ColumnList
+INTO   #ColumnList
+FROM   #StatsInfo AS t
+GROUP  BY t.SchemaName,
+          t.TableName,
+          t.stats_id;
+
+SELECT DISTINCT SI.SchemaName,
+                SI.TableName,
+                SI.stats_id,
+                SI.StatisticsName,
+                SI.StatisticType,
+                SI.IsTemporary,
+                CL.ColumnList AS ColumnName,
+                SI.IsFiltered,
+                SI.filter_definition,
+                SI.last_updated,
+                SI.[rows],
+                SI.rows_sampled,
+                SI.HistorgramSteps,
+                SI.unfiltered_rows,
+                SI.RowsModified
+FROM   #StatsInfo SI
+       INNER JOIN #ColumnList CL
+               ON SI.SchemaName = CL.SchemaName
+                  AND SI.TableName = CL.TableName
+                  AND SI.stats_id = CL.stats_id
+ORDER  BY SI.SchemaName,
+          SI.TableName,
+          SI.StatisticsName;
+GO