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sp_IndexAnalysis-AzureSQLDatabase.sql
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IF OBJECT_ID('dbo.sp_IndexAnalysis') IS NOT NULL
DROP PROCEDURE [dbo].[sp_IndexAnalysis];
GO
/*********************************************************************************************
Index Analysis Script - SQL Server 2008
(C) 2013, Jason Strate
Feedback:
mailto:[email protected]
http://www.jasonstrate.com
License:
This query is free to download and use for personal, educational, and internal
corporate purposes, provided that this header is preserved. Redistribution or sale
of this query, in whole or in part, is prohibited without the author's express
written consent.
More details:
https://github.com/StrateSQL/sqlserver_indexanalysis
*********************************************************************************************/
CREATE PROCEDURE [dbo].[sp_IndexAnalysis]
(
@TableName NVARCHAR(256) = NULL ,
@IncludeMemoryDetails BIT = 1 ,
@IncludeMissingIndexes BIT = 1 ,
@IncludeMissingFKIndexes BIT = 1 ,
@ConsolidatePartitionStats BIT = 1 ,
@Output VARCHAR(20) = 'DUMP' ,
@PageCompressionThreshold INT = 1000 ,
@RowCompressionThreshold DECIMAL(4, 2) = 1 ,
@CheckCompression BIT = 1 ,
@ReadOnlyDatabase BIT = 0 ,
@MaxMissingIndexCount TINYINT = 5 ,
@MinLookupThreshold INT = 1000 ,
@MinScanThreshold INT = 100 ,
@Scan2SeekRatio INT = 1000 ,
@ProcessingMessages BIT = 0
)
WITH RECOMPILE
AS
BEGIN
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
SET NOCOUNT ON;
DECLARE @ERROR_MESSAGE NVARCHAR(2048) ,
@ERROR_SEVERITY INT ,
@ERROR_STATE INT ,
@PROCESSING_START DATETIME;
DECLARE @SQL NVARCHAR(MAX) ,
@DB_ID INT ,
@ObjectID INT ,
@DatabaseName NVARCHAR(MAX);
BEGIN TRY
--================================================================================================
-- Remove temporary tables
--================================================================================================
IF OBJECT_ID('tempdb..#MemoryBuffer') IS NOT NULL
DROP TABLE [#MemoryBuffer];
IF OBJECT_ID('tempdb..#TableMeta') IS NOT NULL
DROP TABLE [#TableMeta];
IF OBJECT_ID('tempdb..#IndexMeta') IS NOT NULL
DROP TABLE [#IndexMeta];
IF OBJECT_ID('tempdb..#IndexStatistics') IS NOT NULL
DROP TABLE [#IndexStatistics];
IF OBJECT_ID('tempdb..#ForeignKeys') IS NOT NULL
DROP TABLE [#ForeignKeys];
IF @Output NOT IN ('DUMP', 'DETAILED', 'DUPLICATE', 'OVERLAPPING', 'REALIGN')
RAISERROR('The value "%s" provided for the @Output parameter is not valid',16,1,@Output);
SELECT @DB_ID = DB_ID() ,
@ObjectID = OBJECT_ID(QUOTENAME(DB_NAME(DB_ID())) + '.' + COALESCE(QUOTENAME(PARSENAME(@TableName, 2)), '') + '.'
+ QUOTENAME(PARSENAME(@TableName, 1))) ,
@DatabaseName = QUOTENAME(DB_NAME(DB_ID()));
IF @TableName IS NOT NULL
AND @ObjectID IS NULL
RAISERROR('The object "%s" could not be found. Execution cancelled.',16,1,@TableName);
-- Obtain memory buffer information on database objects
CREATE TABLE [#MemoryBuffer]
(
[database_id] INT ,
[object_id] INT ,
[index_id] INT ,
[partition_number] INT ,
[buffered_page_count] INT ,
[buffered_mb] DECIMAL(12, 2)
);
IF @IncludeMemoryDetails = 1
BEGIN
SET @PROCESSING_START = GETDATE();
SET @SQL = 'WITH AllocationUnits
AS (
SELECT p.object_id
,p.index_id
,CASE WHEN @ConsolidatePartitionStats = 0 THEN p.partition_number ELSE -1 END AS partition_number
,au.allocation_unit_id
FROM ' + @DatabaseName + '.sys.allocation_units AS au
INNER JOIN ' + @DatabaseName + '.sys.partitions AS p ON au.container_id = p.hobt_id AND (au.type = 1 OR au.type = 3)
UNION ALL
SELECT p.object_id
,p.index_id
,CASE WHEN @ConsolidatePartitionStats = 0 THEN p.partition_number ELSE -1 END AS partition_number
,au.allocation_unit_id
FROM ' + @DatabaseName + '.sys.allocation_units AS au
INNER JOIN ' + @DatabaseName + '.sys.partitions AS p ON au.container_id = p.partition_id AND au.type = 2
)
SELECT DB_ID()
,au.object_id
,au.index_id
,au.partition_number
,COUNT(*) AS buffered_page_count
,CONVERT(DECIMAL(12,2), CAST(COUNT(*) as bigint)*CAST(8 as float)/1024) as buffer_mb
FROM ' + @DatabaseName + '.sys.dm_os_buffer_descriptors AS bd
INNER JOIN AllocationUnits au ON bd.allocation_unit_id = au.allocation_unit_id
WHERE bd.database_id = db_id()
GROUP BY au.object_id, au.index_id, au.partition_number
';
BEGIN TRY
IF @ConsolidatePartitionStats = 1
BEGIN
RAISERROR('Strate''s Warning: Buffered memory totals are an aggregate for all partitions on the table. This behaviour is controlled by the @ConsolidatePartitionStats parameter',10,1) WITH NOWAIT;
PRINT '';
END;
INSERT INTO [#MemoryBuffer]
EXEC [sys].[sp_executesql] @SQL, N'@ConsolidatePartitionStats BIT', @ConsolidatePartitionStats = @ConsolidatePartitionStats;
IF @ProcessingMessages = 1
PRINT 'Processing #MemoryBuffer... ' + CONVERT(VARCHAR, DATEDIFF(MILLISECOND, @PROCESSING_START, GETDATE())) + ' ms';
END TRY
BEGIN CATCH
SELECT @ERROR_MESSAGE = 'Populate #MemoryBuffer (Line ' + CAST(ERROR_LINE() AS NVARCHAR(25)) + '): ' + ERROR_MESSAGE() ,
@ERROR_SEVERITY = ERROR_SEVERITY() ,
@ERROR_STATE = ERROR_STATE();
RAISERROR(@ERROR_MESSAGE, @ERROR_SEVERITY, @ERROR_STATE);
END CATCH;
END;
-- Obtain index meta data information
BEGIN
SET @PROCESSING_START = GETDATE();
CREATE TABLE [#TableMeta]
(
[database_id] SMALLINT ,
[schema_id] INT ,
[schema_name] NVARCHAR(128) ,
[object_id] INT ,
[table_name] NVARCHAR(128) ,
[object_name] NVARCHAR(260) ,
[table_column_count] SMALLINT ,
[table_row_count] BIGINT ,
[has_unique] BIT
);
SET @SQL = N'SELECT
DB_ID()
, s.schema_id
, s.name
, t.object_id
, t.name
, QUOTENAME(s.name)+''.''+QUOTENAME(t.name)
, c2.table_column_count
, ps2.row_count
, CASE WHEN i2.is_unique > 0 THEN 1 ELSE 0 END
FROM ' + @DatabaseName + '.sys.tables t
INNER JOIN ' + @DatabaseName + '.sys.schemas s ON t.schema_id = s.schema_id
CROSS APPLY (SELECT SUM(row_count) AS row_count FROM ' + @DatabaseName
+ '.sys.dm_db_partition_stats ps WHERE t.object_id = ps.object_id AND ps.index_id IN (0,1)) ps2
CROSS APPLY (SELECT COUNT(*) AS table_column_count FROM ' + @DatabaseName + '.sys.columns c1 WHERE t.object_id = c1.object_id) c2
CROSS APPLY (SELECT COUNT(*) AS is_unique FROM ' + @DatabaseName + '.sys.indexes i1 WHERE t.object_id = i1.object_id AND is_unique = 1) i2';
IF @ObjectID IS NOT NULL
SET @SQL = @SQL + CHAR(13) + 'WHERE t.object_id = @ObjectID ';
BEGIN TRY
INSERT INTO [#TableMeta]
EXEC [sys].[sp_executesql] @SQL, N'@DB_ID INT, @ObjectID INT', @DB_ID = @DB_ID, @ObjectID = @ObjectID;
IF @ProcessingMessages = 1
PRINT 'Processing #TableMeta... ' + CONVERT(VARCHAR, DATEDIFF(MILLISECOND, @PROCESSING_START, GETDATE())) + ' ms';
END TRY
BEGIN CATCH
SELECT @ERROR_MESSAGE = 'Populate #TableMeta (Line ' + CAST(ERROR_LINE() AS NVARCHAR(25)) + '): ' + ERROR_MESSAGE() ,
@ERROR_SEVERITY = ERROR_SEVERITY() ,
@ERROR_STATE = ERROR_STATE();
RAISERROR(@ERROR_MESSAGE, @ERROR_SEVERITY, @ERROR_STATE);
END CATCH;
END;
BEGIN
SET @PROCESSING_START = GETDATE();
CREATE TABLE [#IndexMeta]
(
[database_id] SMALLINT ,
[object_id] INT ,
[filegroup_name] NVARCHAR(128) ,
[compression_type] NVARCHAR(128) ,
[index_id] INT ,
[index_name] NVARCHAR(128) ,
[partition_count] SMALLINT ,
[partition_number] INT ,
[is_primary_key] BIT ,
[is_unique] BIT ,
[is_disabled] BIT ,
[type_desc] NVARCHAR(128) ,
[fill_factor] TINYINT ,
[is_padded] BIT ,
[reserved_page_count] BIGINT ,
[used_page_count] BIGINT ,
[size_in_mb] DECIMAL(12, 2) ,
[index_row_count] BIGINT ,
[filter_definition] NVARCHAR(MAX) ,
[indexed_columns] NVARCHAR(MAX) ,
[indexed_column_count] SMALLINT ,
[included_columns] NVARCHAR(MAX) ,
[included_column_count] SMALLINT ,
[key_columns] NVARCHAR(MAX) ,
[data_columns] NVARCHAR(MAX) ,
[indexed_columns_ids] NVARCHAR(1024) ,
[included_column_ids] NVARCHAR(1024) ,
[distinct_indexed_columns_ids] NVARCHAR(1024)
);
SET @SQL = N'SELECT
database_id = DB_ID()
, object_id = t.object_id
, filegroup = ds.name
, x.data_compression_desc
, i.index_id
, index_name = COALESCE(i.name, ''N/A'')
, x.partition_count
, x.partition_number
, i.is_primary_key
, i.is_unique
, i.is_disabled
, type_desc = CASE WHEN i.is_unique = 1 THEN ''UNIQUE '' ELSE '''' END + i.type_desc
, i.fill_factor
, i.is_padded
, x.reserved_page_count
, x.used_page_count
, size_in_mb = CAST(reserved_page_count * CAST(8 as float) / 1024 as DECIMAL(12,2))
, row_count
, i.filter_definition
, indexed_columns = STUFF((
SELECT '', '' + QUOTENAME(c.name)
FROM ' + @DatabaseName + '.sys.index_columns ic
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
WHERE i.object_id = ic.object_id
AND i.index_id = ic.index_id
AND is_included_column = 0
ORDER BY key_ordinal ASC
FOR XML PATH('''')), 1, 2, '''')
, indexed_column_count = (
SELECT COUNT(*)
FROM ' + @DatabaseName + '.sys.index_columns ic
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
WHERE i.object_id = ic.object_id
AND i.index_id = ic.index_id
AND is_included_column = 0)
, included_columns = STUFF((
SELECT '', '' + QUOTENAME(c.name)
FROM ' + @DatabaseName + '.sys.index_columns ic
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
WHERE i.object_id = ic.object_id
AND i.index_id = ic.index_id
AND is_included_column = 1
ORDER BY key_ordinal ASC
FOR XML PATH('''')), 1, 2, '''')
, included_column_count = (
SELECT COUNT(*)
FROM ' + @DatabaseName + '.sys.index_columns ic
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
WHERE i.object_id = ic.object_id
AND i.index_id = ic.index_id
AND is_included_column = 1)
, key_columns = STUFF((
SELECT '', '' + QUOTENAME(c.name)
FROM ' + @DatabaseName + '.sys.index_columns ic
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
WHERE i.object_id = ic.object_id
AND i.index_id = ic.index_id
AND is_included_column = 0
ORDER BY key_ordinal ASC
FOR XML PATH(''''))
+ COALESCE((SELECT '', '' + QUOTENAME(c.name)
FROM ' + @DatabaseName + '.sys.index_columns ic
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN ' + @DatabaseName + '.sys.index_columns ic_key ON c.object_id = ic_key.object_id
AND c.column_id = ic_key.column_id
AND i.index_id = ic_key.index_id
AND ic_key.is_included_column = 0
WHERE i.object_id = ic.object_id
AND ic.index_id = 1
AND ic.is_included_column = 0
AND ic_key.index_id IS NULL
ORDER BY ic.key_ordinal ASC
FOR XML PATH('''')),''''), 1, 2, '''')
, data_columns = CASE WHEN i.index_id IN (0,1) THEN ''ALL-COLUMNS'' ELSE STUFF((
SELECT '', '' + QUOTENAME(c.name)
FROM ' + @DatabaseName + '.sys.index_columns ic
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN ' + @DatabaseName
+ '.sys.index_columns ic_key ON c.object_id = ic_key.object_id AND c.column_id = ic_key.column_id AND ic_key.index_id = 1
WHERE i.object_id = ic.object_id
AND i.index_id = ic.index_id
AND ic.is_included_column = 1
AND ic_key.index_id IS NULL
ORDER BY ic.key_ordinal ASC
FOR XML PATH('''')), 1, 2, '''') END
, indexed_column_ids = (SELECT QUOTENAME(CAST(ic.column_id AS VARCHAR(10))
+ CASE WHEN ic.is_descending_key = 0 THEN ''+'' ELSE ''-'' END,''('')
FROM ' + @DatabaseName + '.sys.index_columns ic
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
WHERE i.object_id = ic.object_id
AND i.index_id = ic.index_id
AND is_included_column = 0
ORDER BY key_ordinal ASC
FOR XML PATH(''''))
+ ''|'' + COALESCE((SELECT QUOTENAME(CAST(ic.column_id AS VARCHAR(10))
+ CASE WHEN ic.is_descending_key = 0 THEN ''+'' ELSE ''-'' END, ''('')
FROM ' + @DatabaseName + '.sys.index_columns ic
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN ' + @DatabaseName + '.sys.index_columns ic_key ON c.object_id = ic_key.object_id
AND c.column_id = ic_key.column_id
AND i.index_id = ic_key.index_id
AND ic_key.is_included_column = 0
WHERE i.object_id = ic.object_id
AND ic.index_id = 1
AND ic.is_included_column = 0
AND ic_key.index_id IS NULL
ORDER BY ic.key_ordinal ASC
FOR XML PATH('''')),'''')
+ CASE WHEN i.is_unique = 1 THEN ''U'' ELSE '''' END
, included_column_ids = CASE WHEN i.index_id IN (0,1) THEN ''ALL-COLUMNS'' ELSE
COALESCE((SELECT QUOTENAME(ic.column_id,''('')
FROM ' + @DatabaseName + '.sys.index_columns ic
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN ' + @DatabaseName
+ '.sys.index_columns ic_key ON c.object_id = ic_key.object_id AND c.column_id = ic_key.column_id AND ic_key.index_id = 1
WHERE i.object_id = ic.object_id
AND i.index_id = ic.index_id
AND ic.is_included_column = 1
AND ic_key.index_id IS NULL
ORDER BY ic.key_ordinal ASC
FOR XML PATH('''')), SPACE(0)) END
, distinct_indexed_columns_ids = (SELECT QUOTENAME(ic.column_id)
FROM ' + @DatabaseName + '.sys.index_columns ic
INNER JOIN ' + @DatabaseName + '.sys.columns c ON c.object_id = ic.object_id AND c.column_id = ic.column_id
WHERE ic.object_id = i.object_id
AND (ic.index_id = i.index_id OR ic.index_id = 1)
AND is_included_column = 0
GROUP BY ic.column_id
ORDER BY ic.column_id
FOR XML PATH(''''))
FROM ' + @DatabaseName + '.sys.tables t
INNER JOIN ' + @DatabaseName + '.sys.schemas s ON t.schema_id = s.schema_id
INNER JOIN ' + @DatabaseName + '.sys.indexes i ON t.object_id = i.object_id
INNER JOIN ' + @DatabaseName + '.sys.data_spaces ds ON i.data_space_id = ds.data_space_id
CROSS APPLY (SELECT p.object_id ,
p.index_id ,
CASE WHEN @ConsolidatePartitionStats = 0 THEN p.partition_number ELSE -1 END AS partition_number,
COUNT(*) AS partition_count,
SUM(ps.row_count) AS row_count,
CASE 1.*SUM(p.data_compression)/NULLIF(COUNT(*),0)
WHEN 0 THEN ''NONE''
WHEN 1 THEN ''ROW''
WHEN 2 THEN ''PAGE''
ELSE ''MIXED'' END AS data_compression_desc,
SUM(ps.in_row_data_page_count) AS in_row_data_page_count,
SUM(ps.in_row_used_page_count) AS in_row_used_page_count ,
SUM(ps.in_row_reserved_page_count) AS in_row_reserved_page_count,
SUM(ps.lob_used_page_count) AS lob_used_page_count,
SUM(ps.lob_reserved_page_count) AS lob_reserved_page_count,
SUM(ps.row_overflow_used_page_count) AS row_overflow_used_page_count,
SUM(ps.row_overflow_reserved_page_count) AS row_overflow_reserved_page_count,
SUM(ps.used_page_count) AS used_page_count ,
SUM(ps.reserved_page_count) AS reserved_page_count
FROM ' + @DatabaseName + '.sys.partitions p
INNER JOIN ' + @DatabaseName
+ '.sys.dm_db_partition_stats ps ON ps.object_id = p.object_id AND ps.index_id = p.index_id AND ps.partition_id = p.partition_id
WHERE i.object_id = p.object_id AND i.index_id = p.index_id
GROUP BY p.object_id, p.index_id, CASE WHEN @ConsolidatePartitionStats = 0 THEN p.partition_number ELSE -1 END) x
';
IF @ObjectID IS NOT NULL
SET @SQL = @SQL + CHAR(13) + 'WHERE t.object_id = @ObjectID ';
BEGIN TRY
IF @ConsolidatePartitionStats = 1
BEGIN
RAISERROR('Strate''s Warning: Page count totals are a summary of all partitions. This behaviour is controlled by the @ConsolidatePartitionStats parameter',10,1) WITH NOWAIT;
PRINT '';
END;
INSERT INTO [#IndexMeta]
EXEC [sys].[sp_executesql] @SQL, N'@DB_ID INT, @ObjectID INT, @ConsolidatePartitionStats INT', @DB_ID = @DB_ID, @ObjectID = @ObjectID,
@ConsolidatePartitionStats = @ConsolidatePartitionStats;
IF @ProcessingMessages = 1
PRINT 'Processing #IndexMeta... ' + CONVERT(VARCHAR, DATEDIFF(MILLISECOND, @PROCESSING_START, GETDATE())) + ' ms';
END TRY
BEGIN CATCH
SELECT @ERROR_MESSAGE = 'Populate #IndexMeta (Line ' + CAST(ERROR_LINE() AS NVARCHAR(25)) + '): ' + ERROR_MESSAGE() ,
@ERROR_SEVERITY = ERROR_SEVERITY() ,
@ERROR_STATE = ERROR_STATE();
RAISERROR(@ERROR_MESSAGE, @ERROR_SEVERITY, @ERROR_STATE);
END CATCH;
END;
BEGIN
SET @PROCESSING_START = GETDATE();
IF @ConsolidatePartitionStats = 1
BEGIN
RAISERROR('Strate''s Warning: Index operational stats (locking, blocking, latching, etc.) are summarized from all partitions. This behaviour is controlled by the @ConsolidatePartitionStats parameter',10,1) WITH NOWAIT;
PRINT '';
END;
ELSE
BEGIN
RAISERROR('Strate''s Warning: Index usage stats are summarized at the index level, per partition data is not available.',10,1) WITH NOWAIT;
PRINT '';
END;
SELECT IDENTITY( INT,1,1 ) AS [row_id] ,
CAST('' AS VARCHAR(10)) AS [index_action] ,
CAST('' AS VARCHAR(50)) AS [index_pros] ,
CAST('' AS VARCHAR(50)) AS [index_cons] ,
[tm].[database_id] ,
[im].[filegroup_name] ,
[im].[compression_type] ,
[tm].[schema_name] ,
[im].[object_id] ,
[tm].[table_name] ,
[tm].[object_name] ,
[im].[index_id] ,
[im].[index_name] ,
[im].[is_primary_key] ,
[im].[is_unique] ,
[im].[is_disabled] ,
[tm].[has_unique] ,
[im].[type_desc] ,
[im].[partition_count] ,
[im].[partition_number] ,
[im].[fill_factor] ,
[im].[is_padded] ,
[im].[reserved_page_count] ,
[im].[used_page_count] ,
[im].[index_row_count] / NULLIF([im].[used_page_count], 0) AS [average_rows_per_page] ,
[im].[size_in_mb] ,
COALESCE([mb].[buffered_page_count], 0) AS [buffered_page_count] ,
COALESCE([mb].[buffered_mb], 0) AS [buffered_mb] ,
CAST(0 AS INT) AS [table_buffered_mb] ,
COALESCE(CAST(100. * [mb].[buffered_page_count] / NULLIF([im].[reserved_page_count], 0) AS DECIMAL(12, 2)), 0) AS [buffered_percent] ,
[tm].[table_row_count] ,
[im].[index_row_count] ,
ROW_NUMBER() OVER (PARTITION BY [im].[object_id] ORDER BY [im].[is_primary_key] DESC, [ius].[user_seeks] + [ius].[user_scans]
+ [ius].[user_lookups] DESC) AS [index_rank] ,
CAST(0 AS INT) AS [full_index_rank] ,
[ius].[user_seeks] + [ius].[user_scans] + [ius].[user_lookups] AS [user_total] ,
COALESCE(CAST(100 * ([ius].[user_seeks] + [ius].[user_scans] + [ius].[user_lookups])
/ (NULLIF(SUM([ius].[user_seeks] + [ius].[user_scans] + [ius].[user_lookups]) OVER (PARTITION BY [im].[object_id]), 0) * 1.) AS DECIMAL(6,
2)), 0) AS [user_total_pct] ,
CAST(0 AS DECIMAL(6, 2)) AS [estimated_user_total_pct] ,
CAST(0 AS FLOAT) AS [missing_index_impact] -- Dick Baker 201303 (INT range not big enough and is f.p. anyway)
,
[ius].[user_seeks] ,
[ius].[user_scans] ,
[ius].[user_lookups] ,
[ius].[user_updates] ,
(1. * ([ius].[user_seeks] + [ius].[user_scans] + [ius].[user_lookups])) / NULLIF([ius].[user_updates], 0) AS [read_to_update_ratio] ,
([ios].[leaf_insert_count] + [ios].[leaf_delete_count] + [ios].[leaf_update_count] + [ios].[leaf_ghost_count]) / NULLIF([ius].[user_updates],
0) AS [average_rows_per_update] ,
CASE WHEN [ius].[user_seeks] + [ius].[user_scans] + [ius].[user_lookups] >= [ius].[user_updates]
THEN CEILING(1. * ([ius].[user_seeks] + [ius].[user_scans] + [ius].[user_lookups]) / COALESCE(NULLIF([ius].[user_seeks], 0), 1))
ELSE 0
END AS [read_to_update] ,
CASE WHEN [ius].[user_seeks] + [ius].[user_scans] + [ius].[user_lookups] <= [ius].[user_updates]
THEN CEILING(1. * ([ius].[user_updates]) / COALESCE(NULLIF([ius].[user_seeks] + [ius].[user_scans] + [ius].[user_lookups], 0), 1))
ELSE 0
END AS [update_to_read] ,
[ios].[row_lock_count] ,
[ios].[row_lock_wait_count] ,
[ios].[row_lock_wait_in_ms] ,
CAST(100.0 * [ios].[row_lock_wait_count] / NULLIF([ios].[row_lock_count], 0) AS DECIMAL(12, 2)) AS [row_block_pct] ,
CAST(1. * [ios].[row_lock_wait_in_ms] / NULLIF([ios].[row_lock_wait_count], 0) AS DECIMAL(12, 2)) AS [avg_row_lock_waits_ms] ,
[ios].[page_latch_wait_count] ,
CAST(1. * [ios].[page_latch_wait_in_ms] / NULLIF([ios].[page_io_latch_wait_count], 0) AS DECIMAL(12, 2)) AS [avg_page_latch_wait_ms] ,
[ios].[page_io_latch_wait_count] ,
CAST(1. * [ios].[page_io_latch_wait_in_ms] / NULLIF([ios].[page_io_latch_wait_count], 0) AS DECIMAL(12, 2)) AS [avg_page_io_latch_wait_ms] ,
[ios].[tree_page_latch_wait_count] AS [tree_page_latch_wait_count] ,
CAST(1. * [ios].[tree_page_latch_wait_in_ms] / NULLIF([ios].[tree_page_io_latch_wait_count], 0) AS DECIMAL(12, 2)) AS [avg_tree_page_latch_wait_ms] ,
[ios].[tree_page_io_latch_wait_count] ,
CAST(1. * [ios].[tree_page_io_latch_wait_in_ms] / NULLIF([ios].[tree_page_io_latch_wait_count], 0) AS DECIMAL(12, 2)) AS [avg_tree_page_io_latch_wait_ms] ,
[ios].[range_scan_count] + [ios].[singleton_lookup_count] AS [read_operations] ,
[ios].[leaf_insert_count] + [ios].[leaf_update_count] + [ios].[leaf_delete_count] + [ios].[leaf_ghost_count] AS [leaf_writes] ,
[ios].[leaf_allocation_count] AS [leaf_page_allocations] ,
[ios].[leaf_page_merge_count] AS [leaf_page_merges] ,
[ios].[nonleaf_insert_count] + [ios].[nonleaf_update_count] + [ios].[nonleaf_delete_count] AS [nonleaf_writes] ,
[ios].[nonleaf_allocation_count] AS [nonleaf_page_allocations] ,
[ios].[nonleaf_page_merge_count] AS [nonleaf_page_merges] ,
[ios].[page_compression_attempt_count] ,
[ios].[page_compression_success_count] ,
CAST(100. * [ios].[page_compression_success_count] / NULLIF([ios].[page_compression_attempt_count], 0) AS DECIMAL(6, 2)) AS [page_compression_success_rate] ,
[tm].[table_column_count] ,
[im].[indexed_columns] ,
[im].[indexed_column_count] ,
[im].[included_columns] ,
[im].[included_column_count] ,
[im].[filter_definition] ,
[im].[key_columns] ,
[im].[data_columns] ,
[im].[indexed_columns_ids] ,
[im].[included_column_ids] ,
[im].[distinct_indexed_columns_ids] ,
CAST('' AS VARCHAR(MAX)) AS [duplicate_indexes] ,
CAST('' AS SMALLINT) AS [first_dup_index_id] ,
CAST('' AS VARCHAR(MAX)) AS [overlapping_indexes] ,
CAST('' AS VARCHAR(MAX)) AS [sibling_indexes] ,
CAST('' AS VARCHAR(MAX)) AS [related_foreign_keys] ,
CAST('' AS XML) AS [related_foreign_keys_xml]
INTO [#IndexStatistics]
FROM [#TableMeta] [tm]
INNER JOIN [#IndexMeta] [im] ON [im].[database_id] = [tm].[database_id]
AND [im].[object_id] = [tm].[object_id]
LEFT OUTER JOIN [sys].[dm_db_index_usage_stats] [ius] ON [im].[object_id] = [ius].[object_id]
AND [im].[index_id] = [ius].[index_id]
AND [im].[database_id] = [ius].[database_id]
LEFT OUTER JOIN [#MemoryBuffer] [mb] ON [im].[object_id] = [mb].[object_id]
AND [im].[index_id] = [mb].[index_id]
AND [im].[partition_number] = [mb].[partition_number]
LEFT OUTER JOIN (SELECT [database_id] ,
[object_id] ,
[index_id] ,
CASE WHEN @ConsolidatePartitionStats = 0 THEN [partition_number]
ELSE -1
END AS [partition_number] ,
SUM([leaf_insert_count]) AS [leaf_insert_count] ,
SUM([leaf_delete_count]) AS [leaf_delete_count] ,
SUM([leaf_update_count]) AS [leaf_update_count] ,
SUM([leaf_ghost_count]) AS [leaf_ghost_count] ,
SUM([nonleaf_insert_count]) AS [nonleaf_insert_count] ,
SUM([nonleaf_delete_count]) AS [nonleaf_delete_count] ,
SUM([nonleaf_update_count]) AS [nonleaf_update_count] ,
SUM([leaf_allocation_count]) AS [leaf_allocation_count] ,
SUM([nonleaf_allocation_count]) AS [nonleaf_allocation_count] ,
SUM([leaf_page_merge_count]) AS [leaf_page_merge_count] ,
SUM([nonleaf_page_merge_count]) AS [nonleaf_page_merge_count] ,
SUM([range_scan_count]) AS [range_scan_count] ,
SUM([singleton_lookup_count]) AS [singleton_lookup_count] ,
SUM([forwarded_fetch_count]) AS [forwarded_fetch_count] ,
SUM([lob_fetch_in_pages]) AS [lob_fetch_in_pages] ,
SUM([lob_fetch_in_bytes]) AS [lob_fetch_in_bytes] ,
SUM([lob_orphan_create_count]) AS [lob_orphan_create_count] ,
SUM([lob_orphan_insert_count]) AS [lob_orphan_insert_count] ,
SUM([row_overflow_fetch_in_pages]) AS [row_overflow_fetch_in_pages] ,
SUM([row_overflow_fetch_in_bytes]) AS [row_overflow_fetch_in_bytes] ,
SUM([column_value_push_off_row_count]) AS [column_value_push_off_row_count] ,
SUM([column_value_pull_in_row_count]) AS [column_value_pull_in_row_count] ,
SUM([row_lock_count]) AS [row_lock_count] ,
SUM([row_lock_wait_count]) AS [row_lock_wait_count] ,
SUM([row_lock_wait_in_ms]) AS [row_lock_wait_in_ms] ,
SUM([page_lock_count]) AS [page_lock_count] ,
SUM([page_lock_wait_count]) AS [page_lock_wait_count] ,
SUM([page_lock_wait_in_ms]) AS [page_lock_wait_in_ms] ,
SUM([index_lock_promotion_attempt_count]) AS [index_lock_promotion_attempt_count] ,
SUM([index_lock_promotion_count]) AS [index_lock_promotion_count] ,
SUM([page_latch_wait_count]) AS [page_latch_wait_count] ,
SUM([page_latch_wait_in_ms]) AS [page_latch_wait_in_ms] ,
SUM([page_io_latch_wait_count]) AS [page_io_latch_wait_count] ,
SUM([page_io_latch_wait_in_ms]) AS [page_io_latch_wait_in_ms] ,
SUM([tree_page_latch_wait_count]) AS [tree_page_latch_wait_count] ,
SUM([tree_page_latch_wait_in_ms]) AS [tree_page_latch_wait_in_ms] ,
SUM([tree_page_io_latch_wait_count]) AS [tree_page_io_latch_wait_count] ,
SUM([tree_page_io_latch_wait_in_ms]) AS [tree_page_io_latch_wait_in_ms] ,
SUM([page_compression_attempt_count]) AS [page_compression_attempt_count] ,
SUM([page_compression_success_count]) AS [page_compression_success_count]
FROM [sys].[dm_db_index_operational_stats](DB_ID(), NULL, NULL, NULL)
GROUP BY [database_id] ,
[object_id] ,
[index_id] ,
CASE WHEN @ConsolidatePartitionStats = 0 THEN [partition_number]
ELSE -1
END
) [ios] ON [im].[object_id] = [ios].[object_id]
AND [im].[index_id] = [ios].[index_id]
AND [im].[partition_number] = [ios].[partition_number];
IF @ProcessingMessages = 1
PRINT 'Processing #IndexStatistics... ' + CONVERT(VARCHAR, DATEDIFF(MILLISECOND, @PROCESSING_START, GETDATE())) + ' ms';
END;
-- Collect missing index information.
IF @IncludeMissingIndexes = 1
BEGIN
SET @PROCESSING_START = GETDATE();
INSERT INTO [#IndexStatistics]
([index_action] ,
[index_pros] ,
[index_cons] ,
[database_id] ,
[has_unique] ,
[is_primary_key] ,
[is_disabled] ,
[user_total_pct] ,
[table_column_count] ,
[filegroup_name] ,
[schema_name] ,
[object_id] ,
[table_name] ,
[object_name] ,
[index_name] ,
[type_desc] ,
[missing_index_impact] ,
[index_rank] ,
[user_total] ,
[user_seeks] ,
[user_scans] ,
[user_lookups] ,
[indexed_columns] ,
[included_columns] ,
[compression_type] ,
[indexed_column_count] ,
[included_column_count]
)
SELECT '' AS [index_action] ,
'' AS [index_pros] ,
'' AS [index_cons] ,
[tm].[database_id] ,
[tm].[has_unique] ,
0 [is_primary_key] ,
0 [is_disabled] ,
0 [user_total_pct] ,
[tm].[table_column_count] ,
'--TBD--' AS [filegroup_name] ,
[tm].[schema_name] ,
[mid].[object_id] ,
[tm].[table_name] ,
[tm].[object_name] ,
'--MISSING INDEX--' AS [index_name] ,
'--NONCLUSTERED--' AS [type_desc] ,
([migs].[user_seeks] + [migs].[user_scans]) * [migs].[avg_user_impact] AS [impact] ,
0 AS [index_rank] ,
[migs].[user_seeks] + [migs].[user_scans] AS [user_total] ,
[migs].[user_seeks] ,
[migs].[user_scans] ,
0 AS [user_lookups] ,
COALESCE([mid].[equality_columns] + CASE WHEN [mid].[inequality_columns] IS NOT NULL THEN ', '
ELSE SPACE(0)
END, SPACE(0)) + COALESCE([mid].[inequality_columns], SPACE(0)) AS [indexed_columns] ,
[mid].[included_columns] ,
'--TBD--' ,
[mic].[indexed_column_count] ,
[mic].[included_column_count]
FROM [#TableMeta] [tm]
INNER JOIN [sys].[dm_db_missing_index_details] [mid] ON [mid].[database_id] = [tm].[database_id]
AND [mid].[object_id] = [tm].[object_id]
INNER JOIN [sys].[dm_db_missing_index_groups] [mig] ON [mid].[index_handle] = [mig].[index_handle]
INNER JOIN [sys].[dm_db_missing_index_group_stats] [migs] ON [mig].[index_group_handle] = [migs].[group_handle]
CROSS APPLY (SELECT SUM(CASE WHEN [column_usage] != 'INCLUDE' THEN 1
ELSE 0
END) AS [indexed_column_count] ,
SUM(CASE WHEN [column_usage] = 'INCLUDE' THEN 1
ELSE 0
END) AS [included_column_count]
FROM [sys].[dm_db_missing_index_columns]([mid].[index_handle])
) [mic];
IF @ProcessingMessages = 1
PRINT 'Add missing indexes to #IndexStatistics... ' + CONVERT(VARCHAR, DATEDIFF(MILLISECOND, @PROCESSING_START, GETDATE())) + ' ms';
END;
-- Collect foreign key information.
BEGIN
SET @PROCESSING_START = GETDATE();
CREATE TABLE [#ForeignKeys]
(
[foreign_key_name] NVARCHAR(256) ,
[object_id] INT ,
[fk_columns] NVARCHAR(MAX) ,
[fk_columns_ids] NVARCHAR(1024) ,
[related_object_id] INT ,
[distinct_column_ids] NVARCHAR(1024) ,
[indexed_column_count] INT
);
SET @SQL = N'SELECT fk.name + ''|CHILD'' AS foreign_key_name
,fkc.parent_object_id AS object_id
,STUFF((SELECT '', '' + QUOTENAME(c.name)
FROM ' + @DatabaseName + '.sys.foreign_key_columns ifkc
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ifkc.parent_object_id = c.object_id AND ifkc.parent_column_id = c.column_id
WHERE fk.object_id = ifkc.constraint_object_id
ORDER BY ifkc.constraint_column_id
FOR XML PATH('''')), 1, 2, '''') AS fk_columns
,(SELECT QUOTENAME(CAST(ifkc.parent_column_id AS VARCHAR(10))+''+'',''('')
FROM ' + @DatabaseName + '.sys.foreign_key_columns ifkc
WHERE fk.object_id = ifkc.constraint_object_id
ORDER BY ifkc.constraint_column_id
FOR XML PATH('''')) AS fk_columns_compare
,fkc.referenced_object_id AS related_object_id
,(SELECT QUOTENAME(CAST(ifkc.parent_column_id AS VARCHAR(10)))
FROM ' + @DatabaseName + '.sys.foreign_key_columns ifkc
WHERE fk.object_id = ifkc.constraint_object_id
ORDER BY ifkc.parent_column_id
FOR XML PATH('''')) AS distinct_column_ids
,(SELECT COUNT(*)
FROM ' + @DatabaseName + '.sys.foreign_key_columns ifkc
WHERE fk.object_id = ifkc.constraint_object_id) AS indexed_column_count
FROM #TableMeta tm
INNER JOIN ' + @DatabaseName + '.sys.foreign_keys fk ON tm.object_id = fk.parent_object_id
INNER JOIN ' + @DatabaseName + '.sys.foreign_key_columns fkc ON fk.object_id = fkc.constraint_object_id
WHERE fkc.constraint_column_id = 1
AND (@ObjectID IS NULL OR (fk.parent_object_id = @ObjectID OR fk.referenced_object_id = @ObjectID))
UNION ALL
SELECT fk.name + ''|PARENT'' as foreign_key_name
,fkc.referenced_object_id AS object_id
,STUFF((SELECT '', '' + QUOTENAME(c.name)
FROM ' + @DatabaseName + '.sys.foreign_key_columns ifkc
INNER JOIN ' + @DatabaseName + '.sys.columns c ON ifkc.referenced_object_id = c.object_id AND ifkc.referenced_column_id = c.column_id
WHERE fk.object_id = ifkc.constraint_object_id
ORDER BY ifkc.constraint_column_id
FOR XML PATH('''')), 1, 2, '''') AS fk_columns
,(SELECT QUOTENAME(CAST(ifkc.referenced_column_id AS VARCHAR(10))+''+'',''('')
FROM ' + @DatabaseName + '.sys.foreign_key_columns ifkc
WHERE fk.object_id = ifkc.constraint_object_id
ORDER BY ifkc.constraint_column_id
FOR XML PATH('''')) AS fk_columns_compare
,fkc.parent_object_id AS related_object_id
,(SELECT QUOTENAME(CAST(ifkc.referenced_column_id AS VARCHAR(10)))
FROM ' + @DatabaseName + '.sys.foreign_key_columns ifkc
WHERE fk.object_id = ifkc.constraint_object_id
ORDER BY ifkc.parent_column_id
FOR XML PATH('''')) AS fk_columns_compare
,(SELECT COUNT(*)
FROM ' + @DatabaseName + '.sys.foreign_key_columns ifkc
WHERE fk.object_id = ifkc.constraint_object_id) AS indexed_column_count
FROM #TableMeta tm
INNER JOIN ' + @DatabaseName + '.sys.foreign_keys fk ON tm.object_id = fk.referenced_object_id
INNER JOIN ' + @DatabaseName + '.sys.foreign_key_columns fkc ON fk.object_id = fkc.constraint_object_id
WHERE fkc.constraint_column_id = 1
AND (@ObjectID IS NULL OR (fk.parent_object_id = @ObjectID OR fk.referenced_object_id = @ObjectID))
';
BEGIN TRY
INSERT INTO [#ForeignKeys]
([foreign_key_name] ,
[object_id] ,
[fk_columns] ,
[fk_columns_ids] ,
[related_object_id] ,
[distinct_column_ids] ,
[indexed_column_count]
)
EXEC [sys].[sp_executesql] @SQL, N'@DB_ID INT, @ObjectID INT', @DB_ID = @DB_ID, @ObjectID = @ObjectID;
END TRY
BEGIN CATCH
SELECT @ERROR_MESSAGE = 'Populate #ForeignKeys (Line ' + CAST(ERROR_LINE() AS NVARCHAR(25)) + '): ' + ERROR_MESSAGE() ,
@ERROR_SEVERITY = ERROR_SEVERITY() ,
@ERROR_STATE = ERROR_STATE();
RAISERROR(@ERROR_MESSAGE, @ERROR_SEVERITY, @ERROR_STATE);
END CATCH;
IF @ProcessingMessages = 1
PRINT 'Processing #ForeignKeys... ' + CONVERT(VARCHAR, DATEDIFF(MILLISECOND, @PROCESSING_START, GETDATE())) + ' ms';
END;
-- Determine duplicate, overlapping, and foreign key index information
UPDATE [i]
SET [i].[duplicate_indexes] = STUFF((SELECT ', ' + [iibl].[index_name] AS [data()]
FROM [#IndexStatistics] [iibl]
WHERE [i].[object_id] = [iibl].[object_id]
AND [i].[is_primary_key] = [iibl].[is_primary_key]
AND [i].[is_unique] = [iibl].[is_unique]
AND ISNULL([i].[filter_definition], '') = ISNULL([iibl].[filter_definition], '')
AND [i].[index_id] <> [iibl].[index_id]
AND REPLACE([i].[indexed_columns_ids], '|', '') = REPLACE([iibl].[indexed_columns_ids], '|', '')
AND [i].[included_column_ids] = [iibl].[included_column_ids]
FOR
XML PATH('')
), 1, 2, '') ,
[i].[first_dup_index_id] = (SELECT MIN([iibl].[index_id])
FROM [#IndexStatistics] [iibl]
WHERE [i].[object_id] = [iibl].[object_id]
AND [i].[is_primary_key] = [iibl].[is_primary_key]
AND [i].[is_unique] = [iibl].[is_unique]
AND ISNULL([i].[filter_definition], '') = ISNULL([iibl].[filter_definition], '')
AND [i].[index_id] > [iibl].[index_id]
AND REPLACE([i].[indexed_columns_ids], '|', '') = REPLACE([iibl].[indexed_columns_ids], '|', '')
AND [i].[included_column_ids] = [iibl].[included_column_ids]
) ,
[i].[overlapping_indexes] = STUFF((SELECT ', ' + [iibl].[index_name] AS [data()]
FROM [#IndexStatistics] [iibl]
WHERE [i].[object_id] = [iibl].[object_id]
AND ISNULL([i].[filter_definition], '') = ISNULL([iibl].[filter_definition], '')
AND [i].[index_id] <> [iibl].[index_id]
AND LEFT([iibl].[indexed_columns_ids], CHARINDEX('|', [iibl].[indexed_columns_ids], 1) - 1) LIKE LEFT([i].[indexed_columns_ids],
CHARINDEX('|',
[i].[indexed_columns_ids],
1) - 1) + '%'
FOR
XML PATH('')
), 1, 2, '') ,
[i].[sibling_indexes] = STUFF((SELECT ', ' + [iibl].[index_name] AS [data()]
FROM [#IndexStatistics] [iibl]
WHERE [i].[object_id] = [iibl].[object_id]
AND [i].[index_id] <> [iibl].[index_id]
AND [i].[distinct_indexed_columns_ids] = [iibl].[distinct_indexed_columns_ids]
FOR
XML PATH('')
), 1, 2, '') ,
[i].[related_foreign_keys] = STUFF((SELECT ', ' + [ifk].[foreign_key_name] AS [data()]
FROM [#ForeignKeys] [ifk]
WHERE [ifk].[object_id] = [i].[object_id]
AND [i].[indexed_columns_ids] LIKE [ifk].[fk_columns_ids] + '%'
FOR
XML PATH('')
), 1, 2, '') ,
[i].[related_foreign_keys_xml] = CAST((SELECT [fk].[foreign_key_name]
FROM [#ForeignKeys] [fk]
WHERE [fk].[object_id] = [i].[object_id]
AND [i].[indexed_columns_ids] LIKE [fk].[fk_columns_ids] + '%'
FOR
XML AUTO
) AS XML)
FROM [#IndexStatistics] [i];
IF @IncludeMissingFKIndexes = 1
BEGIN
INSERT INTO [#IndexStatistics]
([database_id] ,
[filegroup_name] ,
[schema_name] ,
[object_id] ,
[table_name] ,
[object_name] ,
[index_name] ,
[type_desc] ,
[has_unique] ,
[is_primary_key] ,
[is_disabled] ,
[user_total_pct] ,
[table_column_count] ,
[index_rank] ,
[indexed_columns] ,
[indexed_column_count] ,
[indexed_columns_ids] ,
[distinct_indexed_columns_ids] ,
[included_column_count] ,
[key_columns] ,
[related_foreign_keys] ,
[compression_type]
)
SELECT [tm].[database_id] ,
'--TBD--' AS [filegroup_name] ,
OBJECT_SCHEMA_NAME([fk].[object_id]) AS [schema_name] ,
[fk].[object_id] ,
OBJECT_NAME([fk].[object_id]) AS [table_name] ,
[tm].[object_name] ,
'--MISSING FOREIGN KEY INDEX--' AS [index_name] ,
'NONCLUSTERED' AS [type_desc] ,
[tm].[has_unique] ,
0 AS [is_primary_key] ,
0 AS [is_disabled] ,
0 AS [user_total_pct] ,
[tm].[table_column_count] ,
9999 AS [index_rank] ,
[fk].[fk_columns] ,
[fk].[indexed_column_count] ,
[fk].[fk_columns_ids] ,
[fk].[distinct_column_ids] ,
0 AS [included_column_count] ,
[fk].[fk_columns] ,
[fk].[foreign_key_name] ,
'--TBD--'
FROM [#TableMeta] AS [tm]
INNER JOIN [#ForeignKeys] [fk] ON [fk].[object_id] = [tm].[object_id]
LEFT OUTER JOIN [#IndexStatistics] [i] ON [fk].[object_id] = [i].[object_id]
AND [i].[indexed_columns_ids] LIKE [fk].[fk_columns_ids] + '%'
WHERE [i].[index_name] IS NULL;
END;
--================================================================================================
-- Calculate estimated user total for each index.
--================================================================================================
WITH [StatAggregation1]
AS (SELECT [row_id] ,
[object_id] ,
[user_seeks] ,
[user_scans] ,
[user_lookups] ,
[user_total_pct] ,
CONVERT(INT, SUM(CASE WHEN [index_id] IS NULL THEN [user_seeks]
END) OVER (PARTITION BY [object_id]) * 1. * [user_scans]
/ NULLIF(SUM(CASE WHEN [index_id] IS NOT NULL THEN [user_scans]
END) OVER (PARTITION BY [object_id]), 0)) AS [weighted_scans] ,
SUM([buffered_mb]) OVER (PARTITION BY [schema_name], [table_name]) AS [table_buffered_mb]
FROM [#IndexStatistics]
),
[StatAggregation2]
AS (SELECT * ,
CONVERT(DECIMAL(6, 2), 100. * ([StatAggregation1].[user_seeks] + [StatAggregation1].[user_scans]
- [StatAggregation1].[weighted_scans] + [StatAggregation1].[user_lookups])
/ SUM([StatAggregation1].[user_seeks] + [StatAggregation1].[user_scans] - [StatAggregation1].[weighted_scans]
+ [StatAggregation1].[user_lookups]) OVER (PARTITION BY [StatAggregation1].[object_id])) AS [estimated_user_total_pct]
FROM [StatAggregation1]
),
[StatAggregation3]
AS (SELECT * ,
ROW_NUMBER() OVER (PARTITION BY [StatAggregation2].[object_id] ORDER BY [StatAggregation2].[estimated_user_total_pct] DESC, [StatAggregation2].[user_total_pct] DESC) AS [full_index_rank]
FROM [StatAggregation2]
)
UPDATE [ibl]
SET [ibl].[estimated_user_total_pct] = COALESCE([a].[estimated_user_total_pct], 0) ,
[ibl].[table_buffered_mb] = [a].[table_buffered_mb] ,
[ibl].[full_index_rank] = [a].[full_index_rank]
FROM [#IndexStatistics] [ibl]
INNER JOIN [StatAggregation3] [a] ON [ibl].[row_id] = [a].[row_id];
--================================================================================================
-- Update Pro/Con statuses
--================================================================================================
UPDATE [#IndexStatistics]
SET [index_pros] = COALESCE(STUFF(CASE WHEN [index_name] = '--MISSING INDEX--'
AND [related_foreign_keys] IS NOT NULL THEN ', MIFK'
WHEN [related_foreign_keys] IS NOT NULL THEN ', FK'
ELSE ''
END + CASE WHEN [is_unique] = 1 THEN ', UQ'
ELSE ''
END + CASE WHEN [full_index_rank] <= 5
AND [index_name] = '--MISSING INDEX--' THEN ', TM5'
ELSE ''
END + COALESCE(', ' + CASE WHEN [read_to_update] BETWEEN 1 AND 9 THEN '$'
WHEN [read_to_update] BETWEEN 10 AND 99 THEN '$$'
WHEN [read_to_update] BETWEEN 100 AND 999 THEN '$$$'
WHEN [read_to_update] > 999 THEN '$$$+'
END, ''), 1, 2, ''), '') ,
[index_cons] = COALESCE(STUFF(CASE WHEN [index_id] = 0 THEN ', HP'
ELSE ''
END + CASE WHEN [user_lookups] >= @MinLookupThreshold
AND [user_lookups] > [user_seeks] + [user_scans] THEN ', LKUP'
ELSE ''
END + CASE WHEN NULLIF([user_scans], 0) >= @MinScanThreshold
AND [user_seeks] / NULLIF([user_scans], 0) < @Scan2SeekRatio THEN ', SCN'
ELSE ''
END + CASE WHEN [duplicate_indexes] IS NOT NULL THEN ', DUP'
ELSE ''
END + CASE WHEN [overlapping_indexes] IS NOT NULL THEN ', OVLP'
ELSE ''
END + CASE WHEN [sibling_indexes] IS NOT NULL THEN ', SIB'
ELSE ''
END + COALESCE(', ' + CASE WHEN [update_to_read] BETWEEN 1 AND 9 THEN '$'
WHEN [update_to_read] BETWEEN 10 AND 99 THEN '$$'
WHEN [update_to_read] BETWEEN 100 AND 999 THEN '$$$'
WHEN [update_to_read] > 999 THEN '$$$+'
END, '') + COALESCE(', '
+ CASE WHEN [index_id] <= 1
OR [indexed_column_count]
+ [included_column_count] < 4
THEN NULL
WHEN 100. * ([indexed_column_count]
+ [included_column_count])
/ [table_column_count] >= 90
THEN 'C90%'
WHEN 100. * ([indexed_column_count]
+ [included_column_count])
/ [table_column_count] >= 50
THEN 'C50%'
WHEN 100. * ([indexed_column_count]
+ [included_column_count])
/ [table_column_count] >= 25
THEN 'C25%'
END, '')
+ CASE WHEN [index_id] IS NOT NULL
AND [user_total_pct] < 1 THEN ', U1%'
ELSE ''
END + CASE WHEN @CheckCompression = 1
AND [compression_type] = 'NONE' THEN ', NOCMP'
ELSE ''
END + CASE WHEN [is_disabled] = 1 THEN ', DSB'