Monday, June 6, 2011

Script out indexes completely

use sandbox1 go -- Script out indexes completely, including both PK's and regular indexes, each clustered or nonclustered. -- DOES NOT HANDLE COMPRESSION; that's ok, since 2008 R2 RTM benchmarking shows it's faster and results in smaller indexes to insert uncompressed and then compress later -- HARDCODES [dbo] schema (i.e. it doesn't say [JohnDoe].[table], changing that to [dbo].[table] -- modified from original version from http://www.sqlservercentral.com/Forums/Topic961088-2753-2.aspx DECLARE @idxTableName SYSNAME, @idxTableID INT, @idxname SYSNAME, @idxid INT, @colCount INT, @IxColumn SYSNAME, @IxFirstColumn BIT, @ColumnIDInTable INT, @ColumnIDInIndex INT, @IsIncludedColumn INT, @sIncludeCols VARCHAR(MAX), @sIndexCols VARCHAR(MAX), @sSQL VARCHAR(MAX), @sParamSQL VARCHAR(MAX), @sFilterSQL VARCHAR(MAX), @location SYSNAME, @IndexCount INT, @CurrentIndex INT, @CurrentCol INT, @Name VARCHAR(128), @IsPrimaryKey TINYINT, @Fillfactor INT, @FilterDefinition NVARCHAR(MAX), @IsClustered BIT, -- used solely for putting information into the result table @PKDropSQL NVARCHAR(MAX) IF EXISTS (SELECT * FROM tempdb.dbo.sysobjects WHERE id = object_id(N'[tempdb].[dbo].[#IndexSQL]')) DROP TABLE [dbo].[#IndexSQL] CREATE TABLE #IndexSQL ( TableName VARCHAR(128) NOT NULL ,IndexName VARCHAR(128) NOT NULL ,IsClustered BIT NOT NULL ,IsPrimaryKey BIT NOT NULL ,IndexCreateSQL NVARCHAR(max) NOT NULL ,PKDropSQL NVARCHAR(max) NULL ) IF EXISTS (SELECT * FROM tempdb.dbo.sysobjects WHERE id = object_id(N'[tempdb].[dbo].[#IndexListing]')) DROP TABLE [dbo].[#IndexListing] CREATE TABLE #IndexListing ( [IndexListingID] INT IDENTITY(1,1) PRIMARY KEY CLUSTERED, [TableName] SYSNAME COLLATE SQL_Latin1_General_CP1_CI_AS NULL, [ObjectID] INT NOT NULL, [IndexName] SYSNAME COLLATE SQL_Latin1_General_CP1_CI_AS NULL, [IndexID] INT NOT NULL, [IsPrimaryKey] TINYINT NOT NULL, [FillFactor] INT, [FilterDefinition] NVARCHAR(MAX) NULL ) IF EXISTS (SELECT * FROM tempdb.dbo.sysobjects WHERE id = object_id(N'[tempdb].[dbo].[#ColumnListing]')) DROP TABLE [dbo].[#ColumnListing] CREATE TABLE #ColumnListing ( [ColumnListingID] INT IDENTITY(1,1) PRIMARY KEY CLUSTERED, [ColumnIDInTable] INT NOT NULL, [Name] SYSNAME COLLATE SQL_Latin1_General_CP1_CI_AS NULL, [ColumnIDInIndex] INT NOT NULL, [IsIncludedColumn] BIT NULL ) INSERT INTO #IndexListing( [TableName], [ObjectID], [IndexName], [IndexID], [IsPrimaryKey], [FILLFACTOR], [FilterDefinition] ) SELECT OBJECT_NAME(si.object_id), si.object_id, si.name, si.index_id, si.Is_Primary_Key, si.Fill_Factor, NULL --si.filter_definition --filter_definition is in sql 2008 FROM sys.indexes si LEFT OUTER JOIN information_schema.table_constraints tc ON si.name = tc.constraint_name AND OBJECT_NAME(si.object_id) = tc.table_name WHERE OBJECTPROPERTY(si.object_id, 'IsUserTable') = 1 ORDER BY OBJECT_NAME(si.object_id), si.index_id SELECT @IndexCount = @@ROWCOUNT, @CurrentIndex = 1 WHILE @CurrentIndex <= @IndexCount BEGIN SELECT @idxTableName = [TableName], @idxTableID = [ObjectID], @idxname = [IndexName], @idxid = [IndexID], @IsPrimaryKey = [IsPrimaryKey], @FillFactor = [FILLFACTOR], @FilterDefinition = [FilterDefinition] FROM #IndexListing WHERE [IndexListingID] = @CurrentIndex -- So - it is either an index or a constraint -- Check if the index is unique IF (@IsPrimaryKey = 1) BEGIN SET @sSQL = 'ALTER TABLE [dbo].[' + @idxTableName + '] ADD CONSTRAINT [' + @idxname + '] PRIMARY KEY ' -- Check if the index is clustered IF (INDEXPROPERTY(@idxTableID, @idxname, 'IsClustered') = 0) BEGIN SET @sSQL = @sSQL + 'NON' SET @IsClustered = 0 END ELSE BEGIN SET @IsClustered = 1 END SET @sSQL = @sSQL + 'CLUSTERED' + CHAR(13) + '(' + CHAR(13) END ELSE BEGIN SET @sSQL = 'CREATE ' -- Check if the index is unique IF (INDEXPROPERTY(@idxTableID, @idxname, 'IsUnique') = 1) BEGIN SET @sSQL = @sSQL + 'UNIQUE ' END -- Check if the index is clustered IF (INDEXPROPERTY(@idxTableID, @idxname, 'IsClustered') = 1) BEGIN SET @sSQL = @sSQL + 'CLUSTERED ' SET @IsClustered = 1 END ELSE BEGIN SET @IsClustered = 0 END SELECT @sSQL = @sSQL + 'INDEX [' + @idxname + '] ON [dbo].[' + @idxTableName + ']' + CHAR(13) + '(' + CHAR(13), @colCount = 0 END -- Get the number of cols in the index SELECT @colCount = COUNT(*) FROM sys.index_columns ic INNER JOIN sys.columns sc ON ic.object_id = sc.object_id AND ic.column_id = sc.column_id WHERE ic.object_id = @idxtableid AND index_id = @idxid AND ic.is_included_column = 0 -- Get the file group info SELECT @location = f.[name] FROM sys.indexes i INNER JOIN sys.filegroups f ON i.data_space_id = f.data_space_id INNER JOIN sys.all_objects o ON i.[object_id] = o.[object_id] WHERE o.object_id = @idxTableID AND i.index_id = @idxid -- Get all columns of the index INSERT INTO #ColumnListing( [ColumnIDInTable], [Name], [ColumnIDInIndex],[IsIncludedColumn] ) SELECT sc.column_id, sc.name, ic.index_column_id, ic.is_included_column FROM sys.index_columns ic INNER JOIN sys.columns sc ON ic.object_id = sc.object_id AND ic.column_id = sc.column_id WHERE ic.object_id = @idxTableID AND index_id = @idxid ORDER BY ic.index_column_id IF @@ROWCOUNT > 0 BEGIN SELECT @CurrentCol = 1 SELECT @IxFirstColumn = 1, @sIncludeCols = '', @sIndexCols = '' WHILE @CurrentCol <= @ColCount BEGIN SELECT @ColumnIDInTable = ColumnIDInTable, @Name = Name, @ColumnIDInIndex = ColumnIDInIndex, @IsIncludedColumn = IsIncludedColumn FROM #ColumnListing WHERE [ColumnListingID] = @CurrentCol IF @IsIncludedColumn = 0 BEGIN SET @sIndexCols = CHAR(9) + @sIndexCols + '[' + @Name + '] ' -- Check the sort order of the index cols ???????? IF (INDEXKEY_PROPERTY (@idxTableID,@idxid,@ColumnIDInIndex,'IsDescending')) = 0 BEGIN SET @sIndexCols = @sIndexCols + ' ASC ' END ELSE BEGIN SET @sIndexCols = @sIndexCols + ' DESC ' END IF @CurrentCol < @colCount BEGIN SET @sIndexCols = @sIndexCols + ', ' END END ELSE BEGIN -- Check for any include columns IF LEN(@sIncludeCols) > 0 BEGIN SET @sIncludeCols = @sIncludeCols + ',' END SET @sIncludeCols = @sIncludeCols + '[' + @IxColumn + ']' END SET @CurrentCol = @CurrentCol + 1 END TRUNCATE TABLE #ColumnListing --append to the result IF LEN(@sIncludeCols) > 0 SET @sIndexCols = @sSQL + @sIndexCols + CHAR(13) + ') ' + ' INCLUDE ( ' + @sIncludeCols + ' ) ' ELSE SET @sIndexCols = @sSQL + @sIndexCols + CHAR(13) + ') ' -- Add filtering IF @FilterDefinition IS NOT NULL SET @sFilterSQL = ' WHERE ' + @FilterDefinition + ' ' + CHAR(13) ELSE SET @sFilterSQL = '' -- Build the options SET @sParamSQL = 'WITH ( PAD_INDEX = ' IF INDEXPROPERTY(@idxTableID, @idxname, 'IsPadIndex') = 1 SET @sParamSQL = @sParamSQL + 'ON,' ELSE SET @sParamSQL = @sParamSQL + 'OFF,' SET @sParamSQL = @sParamSQL + ' ALLOW_PAGE_LOCKS = ' IF INDEXPROPERTY(@idxTableID, @idxname, 'IsPageLockDisallowed') = 0 SET @sParamSQL = @sParamSQL + 'ON,' ELSE SET @sParamSQL = @sParamSQL + 'OFF,' SET @sParamSQL = @sParamSQL + ' ALLOW_ROW_LOCKS = ' IF INDEXPROPERTY(@idxTableID, @idxname, 'IsRowLockDisallowed') = 0 SET @sParamSQL = @sParamSQL + 'ON,' ELSE SET @sParamSQL = @sParamSQL + 'OFF,' SET @sParamSQL = @sParamSQL + ' STATISTICS_NORECOMPUTE = ' -- THIS DOES NOT WORK PROPERLY; IsStatistics only says what generated the last set, not what it was set to do. IF (INDEXPROPERTY(@idxTableID, @idxname, 'IsStatistics') = 1) SET @sParamSQL = @sParamSQL + 'ON' ELSE SET @sParamSQL = @sParamSQL + 'OFF' -- Fillfactor 0 is actually not a valid percentage on SQL 2008 R2 IF ISNULL( @FillFactor, 90 ) <> 0 SET @sParamSQL = @sParamSQL + ' ,FILLFACTOR = ' + CAST( ISNULL( @FillFactor, 90 ) AS VARCHAR(3) ) IF (@IsPrimaryKey = 1) -- DROP_EXISTING isn't valid for PK's BEGIN SET @sParamSQL = @sParamSQL + ' ) ' SET @PKDropSQL = 'ALTER TABLE [' + @idxTableName + '] DROP CONSTRAINT [' + @idxName + ']' END ELSE BEGIN SET @sParamSQL = @sParamSQL + ' ,DROP_EXISTING = ON ) ' SET @PKDropSQL = NULL END SET @sSQL = @sIndexCols + CHAR(13) + @sFilterSQL + CHAR(13) + @sParamSQL -- 2008 R2 allows ON [filegroup] for primary keys as well, negating the old "IF THE INDEX IS NOT A PRIMARY KEY - ADD THIS - ELSE DO NOT" IsPrimaryKey IF statement SET @sSQL = @sSQL + ' ON [' + @location + ']' --PRINT @sIndexCols + CHAR(13) INSERT INTO #IndexSQL (TableName, IndexName, IsClustered, IsPrimaryKey, IndexCreateSQL, PKDropSQL) VALUES (@idxTableName, @idxName, @IsClustered, @IsPrimaryKey, @sSQL, @PKDropSQL) END SET @CurrentIndex = @CurrentIndex + 1 END SELECT * FROM #IndexSQL

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