From f10de5092c61872b8c896bfa190ebd207aea5ab2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Herman?=
 <11869360+lukaszherman@users.noreply.github.com>
Date: Tue, 23 Aug 2022 12:34:44 +0200
Subject: [PATCH 1/2] Update statistics based on rows count

In most cases I would like to update statistics on small indexes daily and weekly do it on all big one.

EXECUTE dbo.IndexOptimize
@databases = 'USER_DATABASES',
@FragmentationLow = NULL,
@FragmentationMedium = NULL,
@FragmentationHigh = NULL,
@UpdateStatistics = 'ALL',
@StatisticsSample = 100,
@StatisticsRowsMin = 1000,
@StatisticsRowsMax = 50000000,
@Timelimit = 3600,
@LogToTable = 'Y',
@execute = 'N'
---
 IndexOptimize.sql | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/IndexOptimize.sql b/IndexOptimize.sql
index 840e30e..0b15408 100644
--- a/IndexOptimize.sql
+++ b/IndexOptimize.sql
@@ -27,6 +27,8 @@ ALTER PROCEDURE [dbo].[IndexOptimize]
 @StatisticsModificationLevel int = NULL,
 @StatisticsSample int = NULL,
 @StatisticsResample nvarchar(max) = 'N',
+@StatisticsRowsMin int = NULL,
+@StatisticsRowsMax int = NULL,
 @PartitionLevel nvarchar(max) = 'Y',
 @MSShippedObjects nvarchar(max) = 'N',
 @Indexes nvarchar(max) = NULL,
@@ -295,6 +297,8 @@ BEGIN
   SET @Parameters += ', @StatisticsModificationLevel = ' + ISNULL(CAST(@StatisticsModificationLevel AS nvarchar),'NULL')
   SET @Parameters += ', @StatisticsSample = ' + ISNULL(CAST(@StatisticsSample AS nvarchar),'NULL')
   SET @Parameters += ', @StatisticsResample = ' + ISNULL('''' + REPLACE(@StatisticsResample,'''','''''') + '''','NULL')
+  SET @Parameters += ', @StatisticsRowsMin = ' + ISNULL(CAST(@StatisticsRowsMin AS nvarchar),'NULL')
+  SET @Parameters += ', @StatisticsRowsMax = ' + ISNULL(CAST(@StatisticsRowsMax AS nvarchar),'NULL')
   SET @Parameters += ', @PartitionLevel = ' + ISNULL('''' + REPLACE(@PartitionLevel,'''','''''') + '''','NULL')
   SET @Parameters += ', @MSShippedObjects = ' + ISNULL('''' + REPLACE(@MSShippedObjects,'''','''''') + '''','NULL')
   SET @Parameters += ', @Indexes = ' + ISNULL('''' + REPLACE(@Indexes,'''','''''') + '''','NULL')
@@ -942,6 +946,22 @@ BEGIN
 
   ----------------------------------------------------------------------------------------------------
 
+  IF @StatisticsRowsMin < 0
+  BEGIN
+    INSERT INTO @Errors ([Message], Severity, [State])
+    SELECT 'The value for the parameter @StatisticsRowsMin is not supported.', 16, 1
+  END
+
+  ----------------------------------------------------------------------------------------------------
+
+  IF @StatisticsRowsMax < 0
+  BEGIN
+    INSERT INTO @Errors ([Message], Severity, [State])
+    SELECT 'The value for the parameter @StatisticsRowsMax is not supported.', 16, 1
+  END
+
+  ----------------------------------------------------------------------------------------------------
+
   IF @PartitionLevel NOT IN('Y','N') OR @PartitionLevel IS NULL
   BEGIN
     INSERT INTO @Errors ([Message], Severity, [State])
@@ -2016,6 +2036,8 @@ BEGIN
         AND ((@UpdateStatistics = 'ALL' AND (@CurrentIndexType IN (1,2,3,4,7) OR @CurrentIndexID IS NULL)) OR (@UpdateStatistics = 'INDEX' AND @CurrentIndexID IS NOT NULL AND @CurrentIndexType IN (1,2,3,4,7)) OR (@UpdateStatistics = 'COLUMNS' AND @CurrentIndexID IS NULL))
         AND ((@OnlyModifiedStatistics = 'N' AND @StatisticsModificationLevel IS NULL) OR (@OnlyModifiedStatistics = 'Y' AND @CurrentModificationCounter > 0) OR ((@CurrentModificationCounter * 1. / NULLIF(@CurrentRowCount,0)) * 100 >= @StatisticsModificationLevel) OR (@StatisticsModificationLevel IS NOT NULL AND @CurrentModificationCounter > 0 AND (@CurrentModificationCounter >= SQRT(@CurrentRowCount * 1000))) OR (@CurrentIsMemoryOptimized = 1 AND NOT (@Version >= 13 OR SERVERPROPERTY('EngineEdition') IN (5,8))))
         AND ((@CurrentIsPartition = 0 AND (@CurrentAction NOT IN('INDEX_REBUILD_ONLINE','INDEX_REBUILD_OFFLINE') OR @CurrentAction IS NULL)) OR (@CurrentIsPartition = 1 AND (@CurrentPartitionNumber = @CurrentPartitionCount OR (@PartitionLevelStatistics = 1 AND @CurrentIsIncremental = 1))))
+        AND (@StatisticsRowsMin IS NULL OR (NULLIF(@CurrentRowCount,0) => @StatisticsRowsMin))
+        AND (@StatisticsRowsMax IS NULL OR (NULLIF(@CurrentRowCount,0) < @StatisticsRowsMax))
         BEGIN
           SET @CurrentUpdateStatistics = 'Y'
         END

From 9ae9bc0cd11d61b282c9faad4df0ec13476a5f2a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Herman?=
 <11869360+lukaszherman@users.noreply.github.com>
Date: Fri, 26 Aug 2022 09:27:35 +0200
Subject: [PATCH 2/2] Update IndexOptimize.sql

---
 IndexOptimize.sql | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/IndexOptimize.sql b/IndexOptimize.sql
index 0b15408..0d1b264 100644
--- a/IndexOptimize.sql
+++ b/IndexOptimize.sql
@@ -2036,7 +2036,7 @@ BEGIN
         AND ((@UpdateStatistics = 'ALL' AND (@CurrentIndexType IN (1,2,3,4,7) OR @CurrentIndexID IS NULL)) OR (@UpdateStatistics = 'INDEX' AND @CurrentIndexID IS NOT NULL AND @CurrentIndexType IN (1,2,3,4,7)) OR (@UpdateStatistics = 'COLUMNS' AND @CurrentIndexID IS NULL))
         AND ((@OnlyModifiedStatistics = 'N' AND @StatisticsModificationLevel IS NULL) OR (@OnlyModifiedStatistics = 'Y' AND @CurrentModificationCounter > 0) OR ((@CurrentModificationCounter * 1. / NULLIF(@CurrentRowCount,0)) * 100 >= @StatisticsModificationLevel) OR (@StatisticsModificationLevel IS NOT NULL AND @CurrentModificationCounter > 0 AND (@CurrentModificationCounter >= SQRT(@CurrentRowCount * 1000))) OR (@CurrentIsMemoryOptimized = 1 AND NOT (@Version >= 13 OR SERVERPROPERTY('EngineEdition') IN (5,8))))
         AND ((@CurrentIsPartition = 0 AND (@CurrentAction NOT IN('INDEX_REBUILD_ONLINE','INDEX_REBUILD_OFFLINE') OR @CurrentAction IS NULL)) OR (@CurrentIsPartition = 1 AND (@CurrentPartitionNumber = @CurrentPartitionCount OR (@PartitionLevelStatistics = 1 AND @CurrentIsIncremental = 1))))
-        AND (@StatisticsRowsMin IS NULL OR (NULLIF(@CurrentRowCount,0) => @StatisticsRowsMin))
+        AND (@StatisticsRowsMin IS NULL OR (NULLIF(@CurrentRowCount,0) >= @StatisticsRowsMin))
         AND (@StatisticsRowsMax IS NULL OR (NULLIF(@CurrentRowCount,0) < @StatisticsRowsMax))
         BEGIN
           SET @CurrentUpdateStatistics = 'Y'