The Reorganize Index task encapsulates the Transact-SQL ALTER INDEX statement. This makes it more likely that some other session is blocked by your session, and that you may, in turn, become blocked by a lock held by that session. Rebuilding an index can be executed online or offline. The area that most people are familiar with is using Database Maintenance Plans. #1258597. ONLINE option will keep index available during the rebuilding. Reorganizing an index uses minimal system resources. create table dbo. I'm looking for a way to reorganize a MS SQL Server database. Reorganize an index For rowstore indexes, the Database Engine defragments only the leaf level of clustered and nonclustered indexes on. You may also want to add a try/catch block so that those tables that do not support online indexing don't cause the entire operation to fail. : 15% com. This separation between the logical path and physical path lets SQL Server reorganize data internally without affecting the validity of the path. The SQL Server Maintenance Solution lets you intelligently rebuild or reorganize only the indexes that are fragmented. For memory-optimized nonclustered indexes, memory consumption. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance. Right-click on Maintenance Plans and select New Maintenance Plan…. The first rebuilds a single index on a table and the second rebuilds all the indexes on the table. 2 – Two minutes later, a background task is blocked by the index. rebuild sql-server-2005 oracle performance clustered-index sql-server-2008-r2 fragmentation blocking indexing sql full-text sql-server reorganize tsql sql-server-2008 indexes sql-server-2012 alter-table unique maintenance table partition index-performance sql-server-2000 mssql unique-constraint. A REORGANIZE physically reorders the leaf-level pages to match the logical order of the leaf nodes, whereas a REBUILD does just that, it rebuilds the index. For more information, see CREATE INDEX (Transact-SQL). To achieve availability similar to the reorganize. Until SQL Server 2017 (14. This view can be used to query the metadata about these fragments. Review ALTER INDEX command on MSDN. For the unchecked option, TRUNCATEONLY is applied which prevents the SQL server from performing any data reorganising. There are several options that allow you to specify the level of. This allows you to interrupt the rebuild and preserve the work already done. In this article. ALTER INDEX statement can be used to change the properties of an index, such as its fill factor or sort order, or to rebuild or reorganize the index. Membangun kembali atau mengatur ulang indeks rowstore kecil mungkin tidak mengurangi fragmentasi. For rebuild/reorganise and statistics there are scripts (such as SQL Fool's one) that do a better job. 4. Note: You can select “Reorganize All” to reorganize all the indexes in the table. You could also refer another query which may be helpful to you. Add a comment. a. Online rebuilds are online available on the Enterprise version of SQL Server and your version probably isn't, so just set the operation not to be run "Online" on you Wizard. It also performs online defragmentation. I use SQL Server 2008 R2, I need to rebuild the index for every table in a database. Click Close. The fill factor is 0. Offline Rebuilding: This is faster but makes the database unavailable for the duration of the operation. Additionally, after reorganizing indexes it is reasonable to update the statistics as this operation does not update the statistics like the index rebuild operation. x) and later versions, Azure SQL Database, and Azure SQL Managed Instance: version_record_count:. It also performs online defragmentation. SQL Server, Hive. Just go to the table, further expand the indexing folder and right after that you can right-click on it and select the option to rebuild all the indexes. This improves the Qualification Limit for REORGANIZE to remove deleted rows from a rowgroup in Clustered Columnstore Index (CCI) in SQL Server 2019. ". Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. I also offer remote DBA services for SQL Server, performance tuning, and I do so. Sorted by: 5. Wildnet technologies is a thoughtful smo company. When doing that replace, it will get an schema modification lock. Proceed to the Steps tab: Clicking on New. Drag the column to another location within the table. When I ran the query again, this was the result: Fragmentation over 70% for 12 indexes, over 30% for 15 indexes. Too many full-text index fragments in the full-text index, can lead to substantial degradation in query performance. Method 2: Set Change_Tracking to Manual, by using the following command: ALTER FULLTEXT INDEX ON table_name set Change_tracking = Manual Then, create SQL Server jobs to spread out when incremental populations are run. – Ed B. If the former, you could do a shrink and then ALTER INDEX. Last weekend the index maintenance took more than 5 hours and the full backup was running at the same time. Apply SQL Server index key column best practices. Monitor tempdb during rebuild operations. ALTER INDEX ALL ON table_name REBUILD OR. you’ll notice a little chart/paper icon. REORGANIZE, but shrink is going to take an age, and then you’ll generate a ton of log doing the fragmentation removal. This method can help when Change_tracking is Auto. USE myDb GO EXEC sp_MSForEachTable 'ALTER INDEX ALL ON ? REBUILD'. ALTER DATABASEdb_name SETREAD_COMMITTED_SNAPSHOT ON go Alter index Index_name on table_name. If the command that's running is a reorg, you can just kill it. SQL Server ALTER INDEX Syntax. Expand Databases and then right-click the. You can use Ola's Index maintenance solution or Michelle Ufford's - Index Defrag Script. April 29, 2010. Expand the table on which you want to reorganize an index. Click OK. CREATE TABLESPACE — define a new tablespace. How to Reorganize a Table (Doc ID 151588. The first and most popular method is to rebuild indexes. For legacy reasons, we have a single full-text catalog that contains all of our full-text indexes. Execution Time of Select Statement. Този браузър вече не се поддържа. The following shows the syntax of NVARCHAR: In this syntax, n defines the string length that ranges from 1 to 4,000. Method 2: Manually create rebuild job using scripts and scheduled as. If you look into the sys. Select the box to the left of the column name that you want to reorder. Sorted by: 238. If there is no room for it, then SQL Server will reorganize the rows, moving some of the rows onto a new data page, and leaving some on the old data page. USE AdventureWorks; GO ALTER INDEX ALL ON Production. The table at issue has 111,543,114 rows. The simpler solution is to use ALTER INDEX REORGANIZE, or DBCC INDEXDEFRAG. It’s not hidden, but it. * Execute without specifying a schema to check user tables in all schemas. every 2-3 day if running maintenance once per day (night). For a dedicated SQL pool table with an ordered CCI, ALTER INDEX REBUILD will re-sort the data using tempdb. Otherwise you're holding an exclusive lock on the table/partition before you start the reorganize. For legacy reasons, we have a single full-text catalog that contains all of our full-text indexes. dbo. CREATE TEXT SEARCH CONFIGURATION — define a new text search configuration. If avg_fragmentation_in_percent > 5% and < 30%, then use ALTER INDEX REORGANIZE: This statement is replacement for DBCC INDEXDEFRAG to reorder the leaf level pages of the index in a logical order. If the command that's running is a reorg, you can just kill it. Index fragmentation is pretty meaningless in regards to performance. REORGANIZE vs. 0. Then, it combines rowgroups. index_id > 0 -- Indexes. _in_percent > 50 AND ss. " But following the Russ's reply the REORGANIZE is a more time expensive operation the REBUILD one. Official documents (ntext, text, and image (Transact-SQL)) have stated: IMPORTANT! ntext, text, and image data types will be removed in a future version of SQL Server. A SQL Server DBA myth a day: (29/30) fixing heap fragmentation. When the process completes, switch the recovery model back to Full or Bulk-Logged and take a full database backup. From SQL Server 2014, you can use the WAIT_AT_LOW_PRIORITY option to delay the potential for blocking – see this blog post. indexes. These are two different modes to remove index fragmentation. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance A fulltext index uses internal tables called full-text index fragments to store the inverted index data. You may be blocked making these changes by an. to find the row associated with key values quickly. ALTER INDEX (Transact-SQL) Salt la conținutul principal. ALTER INDEX TableDetails_UK0 ON TableDetails REBUILD WITH ( PAD_INDEX=OFF, SORT_IN_TEMPDB=ON. Reorganizing an index uses minimal system resources. Open your table in SSMS in design mode: Reorder your columns: It is important to not save your change. Hingga, dan termasuk, SQL Server 2014 (12. It also performs online defragmentation. Some Initial Caveats: It is generally known as a worst practice to ever shrink a production database or data file (Log files are another issue as this question talks about). The following example returns all statistics for all tables and indexes within the instance of SQL Server by specifying the wildcard NULL for all parameters. 1 lists all tokens that are key words in the SQL standard and in PostgreSQL 16. Need more info. From Rebuild or Reorganize: SQL Server Index Maintenance by Kendra Little: Short version: Rebuild: An index ‘rebuild’ creates a fresh, sparkling new structure for the index. Labels: Database Administration, database index, index rebuild, rebuild all indexes in a database sql server, reorganize index sql server, sql server rebuild index script. If the index is disabled, rebuilding brings it back to life. Select the index with the fill factor that you want to specify. Add a comment |Index Reorganize/ Rebuild Time. The first file has 100MB free space and the second has 200MB free. Option 1 - Using the GUI interface in SQL Server Management Studio. SQLBits is the largest Microsoft Intelligent Data Platform conference with over 300 sessions from March 13-18, including SQL Server, Azure SQL, Power BI, Machine Learning, and more! Your customers can reconnect with old friends, build new relationships, gain new skills, and get world-class training. The Query Optimizer. To fix the fragmentation either rebuild or reorganize the index on the table. Shrink the database: r-click on DB, 'Tasks', 'Shrink', 'Database' (tick the 'Reorganize files checkbox) With this, I was able to reduce the percentage of 'unused' space in the Disk report. You need to do more research but basically, reorganize as often as needed to keep your fragmentation under 20-30% until you can rebuild it during off-hours. 10 Answers. ALTER INDEX failed because the following SET options have incorrect settings: 'QUOTED_IDENTIFIER'. If the older date partitions are pretty static , you might benefit from partition level index rebuild / reorganize, depending on sql server version. Feb 21, 2022, 8:01 AM. In order to rebuild the index SQL Server still needs a copy of the data and must reorganize the data as the index is rebuilt. Index Rebuild operation first drops and then recreates the index. Shrink a database. Stack Exchange Network Stack Exchange network consists of 183 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. The reason why too many page splits can decrease the performance of SQL Server is because of the large number of I/O operations. Service account don't have permissions. Columns with text, image, ntext, varchar (max), nvarchar (max) and varbinary (max) cannot be used in the index key columns. With SQL Server there are several options that you can use to perform maintenance tasks. AFTER DECISION: DO THAT !. Go to Database Diagrams folder. (and even with the Enterprise Edition, is blocking when rebuilding clustered indexes)If you want to fully automate your SQL Server Index maintenance then I seriously recommend that you check out Michelle Ufford's stored procedure for this. If the table remains a heap, while its non-clustered indexes have both reorganize and rebuild options, the heap does not have a reorganize option. Expand Databases, and then right-click the database that you want to shrink. RS Repacked Basic Script available time ago and free to use on MSDN: “SQL Script for SQL Index Maintenance (Degraf or Rebuild)” HOW SYSTEM WORK ? Example : Analysis indexes defragmentation RATIO < 30% * “30” is an arbitrary decision point at which to SWITCH between REORGANIZING OR REBUILDING. It is used when the operation takes a. A page is a small section of a database, typically an 8kb chunk. No, there is no auto-magical defragging of indexes. The table at issue has 111,543,114 rows. Below the last two rows that displays the fail: Source: Reorganize Index Executing query "ALTER INDEX [PK_xxTableName] O. It does this by dropping the existing plan from the procedure cache, forcing a new plan to be created the next time that the procedure or. Preuzimanje pregledača Microsoft Edge Više. In Object Explorer, connect to an instance of Database Engine. Descărcați Microsoft Edge Mai multe informații. REORGANIZE, or to rebuild the index using ALTER INDEX. Hence, we have configured and tested the Rebuild Index task. [myTable] REORGANIZE WITH ( LOB_COMPACTION = ON ) I have the above query running for 16 days (still running), the table is a dummy table used for benchmark tests, it has over 10 Billion rows. This new DMF ( sys. If you truly want to REBUILD, and you want to do it for ALL indexes on a given table, then the command would be (straight from the official docs that npe pointed you at): For more instructions see the official docs. Both are fully logged in the FULL. Right-click the table on which you want to specify an index's fill factor and select Design. I was going to take a look at Ola Hallengren 's scripts and some other stuff but wanted to see if there was possibly a simple explanation for this. For better maintanence of deleted rows in Clustered Columnstore Index, Trace Flag (TF) 11631 and TF 11634 are introduced. That is not the last rebuild date of the index, it's the date the. We would like to show you a description here but the site won’t allow us. Provide the appropriate name of the maintenance plan. Faceți upgrade la Microsoft Edge pentru a profita de cele mai noi funcții, actualizări de securitate și asistență tehnică. 10. SQL Server internally does not keeps in any system table the fragmentation value so how it is going to decide what criteria to select when. To enable the Web server, go to the “Server” -> “Domain Configuration” menu. The first rebuilds a single index on a table and the second rebuilds all the indexes on the table. March 8, 2013. · In addition , please take a look at Ola's great utility to take. 2. December 3, 2010 at 12:21 pm. Recall the paper example from above: a rebuild would be like reprinting the document in the correct order and trashing the old ones. Click on New Database Diagram. All disk metrics (throughput, queue length, etc. Microsoft recommends Index Rebuild operation to defrag indexes if the fragmentation level of your index is greater. ” Select the vault database(s). public static final EAlterIndexOption reorganize. In-memory nonclustered indexes are implemented using a data structure called a Bw-tree, originally envisioned and described by Microsoft Research in 2011. ;WITH cte AS ( SELECT object_id, index_id, partition_number, rows, ROW_NUMBER () OVER (PARTITION BY object_id, index_id, partition_number. You can customize the amount of fragmentation in an index before it's rebuilt or reorganized, and this cuts down on the amount of work involved in reindexing. A table may only have one columnstore index on it at a time, regardless of whether it is clustered or nonclustered . Attempt to perform an online rebuild. It is causing other queries to wait, even simple ones like: SELECT * FROM tableName WHERE indexedColumn = @value. Disable the indexes on the target table (at least the non-clustered indexes, or NCIs) Insert the new data. ALTER INDEX (Transact-SQL)The fix for this issue was first released in Cumulative Update 6 for SQL Server 2008 Service Pack 1. If an index contains less than 100 pages, I will perform no maintenance. As a generally accepted good practice reorganize only when ragmentation of index is between 5 to 30 % for anything more than that rebuild the index. line is helpful to give the user some indication of what indexes it is rebuilding and how far it has progressed. If we double click on that constraint, we can see that the Update Statistics Task will start after the previous, Reorganize Index Task, is. Expand the domain, Nodes, Server, and right-click on the server you want to run the webserver on. I specialize in performance tuning emergencies. REORGANIZE, UPDATE STATISTICS and a simple SELECT statement. Expand the table on which you want to reorganize an index. Create a non-clustered. sp_helpdb 'databasename' provides the list of data&log files in a database. Review Deeper insight into unused indexes for SQL Server tip. Therefore you need to identify those tables/indexes & you need to do the re. The query causing the block is in the format: ALTER INDEX [indexName] ON tableName REORGANIZE. Select “Edit webserver” In. Description. Index Defrag Script V4. Solution Usually, when indexes are not too fragmented (as suggested by Microsoft, when fragmentation level is between 5% and 30%), it is recommended to reorganize indexes. Use ALTER INDEX REORGANIZE, the replacement for DBCC INDEXDEFRAG, to reorder the leaf level pages of the index in a logical order. For better maintanence of deleted rows in Clustered Columnstore Index, Trace Flag (TF) 11631 and TF 11634 are introduced. For more information, see Data Types (Transact-SQL). Auto Shrink Verify by any chance the AUTO SHRINK option set to ON at database level as this could cause heavy fragmentation Creating a SQL Server Maintenance Plan. On a very busy system, attaining this exclusive lock can sometimes be a problem. Note: You can select “Reorganize All” to reorganize all the indexes in the table. Select the box to the left of the column name that you want to reorder. In this article. Review Using SQL Server DMVs to Identify Missing Indexes tip. However, recently this approach has. On larger tables (50GB table is getting there) I've seen REORGANIZE consume all transaction log space if you follow this rule. There's a general consensus that you should reorganize ("defragment") your indices as soon as index fragmentation reaches more than 5 (sometimes 10%), and you should rebuild them completely when it goes beyond 30% (at least that's the numbers I've heard advocated in a lot of places). In my 2-day SQL Critical Care®, I quickly assess your application’s performance, determine the root cause of the slowdowns, and then get everyone on the same page for permanent pain relief. When a table has multiple indexes, create the clustered index first, then the nonclustered. Deletes catalog and creates new. The data and log files are 10 MB each and the data file contains 6 MB of data. First, you can produce a log backup even if the database files are damaged or even lost (using the NO_TRUNCATE option for the BACKUP LOG command). The nonclustered B-tree index is updated as changes occur to the columnstore index. Sorted by: 2. On the next dialog box, make sure the File type is set to "Data" to shrink the mdf file. Managed online disaster recovery between SQL Server 2022 and Azure SQL Managed Instance allows near real-time database replication and bidirectional. The only particularity is that in Hyperscale, there is only one filegroup. Select * from sys. The ApexSQL Operations Toolkit for SQL Server is the indispensable set of tools for managing SQL Server databases more effectively. dm_db_index_physical_stats function in SQL Server, and the general recommendations in the Books Online are: If an index has less than 1,000 pages, don’t bother removing fragmentation; If the index has:It is documented that you can rebuild the index ONLINE for those indexes which has LOB columns as the index key. It defragments the leaf level of clustered and nonclustered indexes on tables and views by physically reordering the leaf-level pages to match the logical, left to right, order of the leaf nodes. 000 rows. Sumanta Roy (5/26/2011) Select Name as IndexName, STATS_DATE ( object_id , index_id ) as IndexCreatedDate. In Object Explorer, right-click the table with columns you want to reorder and select Design. We switched to REBUILD instead with no more problems, but ignored fragmentation. Rebuild/Reorganize working fine. right click on the mnagement studio, tasks->shrink->file provides how much % you can shrink. Therefore, in our maintenance plan, we will add an Update Statistics task just after the Reorganize Index task. I used this approach to improve performance and it worked perfectly for a long time. ndf and data_file_2. As you see, with index pages cached in memory, index rebuild time is just 10 seconds as it is shown in Figure 5. . SQL Bits 2023. --Note: You need to specify the fill factor. is_ms_shipped = 0 --Excludes any objects created as a part. This is a pretty small index based on the stats you have in addition the table is pretty skinny. But commit your whole transaction before reorganize. [MyTable] REORGANIZE WITH ( LOB_COMPACTION = OFF ) is failing with this error: Transaction (Process ID xxx) was deadlocked on lock | communication buffer resources with another process and has been. Index maintenance such as index rebuilds are also a wasteful operation. On the Standard bar, select New Query. Product REORGANIZE GO. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Memory requirements for partitioned index operations that require sorting can be greater if the Query Optimizer applies degrees of. SQL DBA,SQL Server MVP(07, 08, 09) A socialist is someone who will give you the shirt off *someone else's* back. You can apply a new fillfactor when you rebuild an index. The script uses the following parameters: @reportOnly (required) Values: - 0: The script will reorganize or rebuild the fragmented indexes. A SQL Server DBA myth a day: (29/30) fixing heap fragmentation. The Reorganize Index task encapsulates the Transact-SQL ALTER INDEX statement. To run the Maintenance plan, make sure your SQL server agent service is running. This is great if you want to release some space quickly without having an immediate performance impact, however it can effect ongoing performance as the database will become fragmented. Ovaj pregledač više nije podržan. MS-SQL Server - Ghada (A Kalash, Full of Unique Th. Both versions allow you to specify the. REORGANIZE Tells SQL Server to perform a master merge, which involves merging the smaller indexes created in the process of indexing into one large index. Drag the column to another location within the table. REBUILD will not just rebuild index, but also force update of corresponding statistics. Deletes catalog and creates new. HeapTest ( Id INT not NULL Default (1), Col1 char (5000) Not null Default ('Heaps Are Cool') ) SET NOCOUNT ON Insert into dbo. #969726. OBJECT_ID) AS TableName,ALTER INDEX (Transact-SQL) Skip to main content. Надстройте до Microsoft Edge, за да се възползвате от най-новите функции, актуализации на защитата и техническа поддръжка. Reading such data follows the same format. The blog post has further details about the table you need to create, and has a SQL Server Agent job that you can configure to run on a schedule to automate the stats update process. Here are a couple of examples. SQL Server 2005 and later provides a dynamic management function (DMF) to determine index fragmentation level. Working this way is usually optimal, since SQL Server does not have to update. But, if we insert more rows, the reads needed to write to the heap remain about the same, while the reads on the clustered index table increase: If we continue to insert, we’ll find reads settle around this level. Merging the full-text index fragments can improve performance and free up disk and memory resources. As this is an online operation, the index is available while the statement is running. You can safely stop it but you need to find out why your database became slow. A nonclustered columnstore index functions similarly to a clustered. Firstly you should take into account the page_count of the index. 2 I'm looking for a way to reorganize a MS SQL Server database. Because I was blamed for the slow SQL Server mainly because I. The index fragmentation level can be found using the sys. Link To find index fragmentation at partition level . Shrinking is a wasteful operation. Right-click on the Maintenance Plans and go to Maintenance Plan Wizard. (e. m. Partitions can be rebuilt individually. Troubleshoot SQL Server backup failures by using Windows Event Viewer; Troubleshoot SSH;. How Fragmentation Hurts SQL Server Performance. In Object Explorer, Expand the. When I run alter index index [IndexName] on dbo. . - 1: The script will just output the index reorganization or rebuild commands without running them. Point to Tasks, point to Shrink, and then select Database. Click Next, and you can define the Update Statistics task. Heaptest default values go 50 select. My problem is that the reorg is running for a very long time. I'm trying to find out how our production database indexes are getting fragmented. pause public static final. dm_db_index_physical_stats DMV). Improve this answer. Take a look at what other children have. Not often: only one system with a certain load pattern. April 1, 2009 at 5:07 am. ApexSQL Defrag tool is a 3 rd party SQL index defragmentation tool that you can easily use to perform number of operations related to the SQL Server indexes. x), REORGANIZE does more than compress delta rowgroups into the columnstore. SQL Serverはマイクロソフト社が開発したRDBMSです。Oracle・MySQLに次いで人気があります。また、小規模から大規模までカバーしておりWindows環境に強みがあります。ここでは、初心者向け情報から構築までの一連の手順を解説していき. Best Practices. Correct, I don't let Sharepoint boss my SQL server around. Executing this query requires the VIEW SERVER STATE permission. After this command is completed, in the command prompt we press Ctrl+C to shut down SQL Server: Now, if we start the SQL Server instance. These scripts are widely tested in the community and are much flexible so that you. インデックスの断片化の状態がわかったら、それによってインデックス (index) を再構成 (Reorganize)するか、または再構築 (Rebuild) するか決定します。. It cames in two flavours: online and offline. SQL Server offers REBUILD and REORGANIZE options, but they are available only for a full-text catalog (which may contain any number of full-text indexes) in its entirety. Simply using a partition_options clause with ALTER TABLE on a partitioned table repartitions the table according to the partitioning scheme defined by the partition_options. One such technique is pivoting, which involves converting rows to columns in a table. Disk space is an important consideration when you create, rebuild, or drop indexes. REORGANIZE, or to rebuild the index using ALTER INDEX. 3,895 9 51 77. ‘Online’ is a bit of a misnomer. Speaking for SQL Server, I tend to choose a index size and index fragmentation level at which point I begin performing index maintenance. You can read more on rebuilding indexes here . Additionally, after reorganizing indexes it is reasonable to update the statistics as this operation does not update the statistics like the index rebuild operation. Avoid using these data types in new development work, and plan to modify applications that currently use them. If you read complete article it was trying to point out the commands or operations in SQL Server which would require additional disk. ALTER INDEX [PK_SalesOrderDetailEnlarged_SalesOrderID_SalesOrderDetailID] ON [Sales]. 0 to SQL Server 2016 there is no feature to rebuild index automatically. In the left pane where your databases are listed, right-click on the "SampleDataBase" and from the "Tasks" option select "Shrink" then "Files", as in the image below. The. Then, it combines rowgroups. Index Rebuild vs Index Reorganize. Here are two lesser known pitfall about the purge backup history command: 1. Review Index Fragmentation Report in SQL Server 2005 and 2008 tip. . Speaking for SQL Server, I tend to choose a index size and index fragmentation level at which point I begin performing index maintenance. The purpose is to reduce the size of database and increase the db performance. If an online rebuild can not be performed due to column types, do an offline rebuild if. If the index is disabled, rebuilding brings it back to life. - 1: The script will just output the index reorganization or rebuild commands without running them. Reorganizing or rebuilding a cluster index does not have any impact on the non-cluster indexes in SQL Server 2000 SP4 or above, or any version of SQL 2005 or.