” Select the vault database(s). In addition, reorganization uses minimal resources and is automatically. SQL Server 2008 provided a special type of column called a spatial column, which is a table column that contains data of a spatial data type, such as geometry or geography. Click the plus sign to expand the Tables folder. Rebuild Index. x), REORGANIZE is only used to compress CLOSED rowgroups into the columnstore. We have decided to use the following code to compute a fragmentation % for each full-text index. This statement essentially merges all the fragments. When I run alter index index [IndexName] on dbo. . dm_os_wait_stats DMV, you will find 21 new wait types related to the SQL Server 2014 Lock Priorities. It's better to do reorg on Nightly. Coming to update stats, I would prefer to do it with Full Scan depending on the size of the databases. The alternative for online rebuilding is to create a new index using CREATE INDEX CONCURRENTLY, then drop the old. This is a powerful feature that you can use to your advantage. It has an IF condition for the Reorganize but i don't need it, i need to modify the code so it queries indexes of a certain database and schema and rebuilds only if the fragmentation is bigger than 5%. As visible in the above image, REBUILD and REORGANIZE are the two available choices to play out the trim operation over the page. Values: - 0: The script will reorganize or rebuild the fragmented indexes. e. Use ALTER INDEX REORGANIZE, the replacement for DBCC INDEXDEFRAG, to reorder the leaf level pages of the index in a logical order. Technically, rebuilding consists of copying, renaming, and dropping the old one, internally. This means that for a lightly fragmented index (e. Depending on the fragmentation level, you need to rebuild or reorganize the indexes. Then, choose New, Job to create a SQL agent job. ALTER INDEX ALL ON table_name REBUILD OR. The syntax for rebuilding indexes is very simple, we just add the "WITH ONLINE=ON" clause to the ALTER INDEX command. Coming to update stats, I would prefer to do it with Full Scan depending on the size of the databases. Since you issued a REBUILD and not a REORG, cancelling the query will result in a rollback which will take even more time. 3番目のパラメータは、Non ClusteredインデックスID（sys. Best regards,. I cannot understand the reason, can you ?. Clustered Columnstore Indexes, as well as “regular” indexes, support the Rebuild and Reorganize operations. Article. Rebuilding an index means that a whole new set of pages is allocated for it. Merging the full-text index fragments can improve performance and free up disk and memory resources. Categorize fragmentation percentage – Microsoft suggests that we. More actions. It's a great piece of work - it allows you to define fragmentation levels for which you. I would prefer to rebuild the indexes where the fragmentation percent of the indexes is greater than 30% and a Re-org of indexes where fragmentation percent is in between 9% and 30%. You will often see advice to perform a REBUILD on highly-fragmented indexes, rather than a REORGANIZE-- This is because rebuilding from scratch can be more efficient. I am a new DBA to a SQL 2005 production Report server. skNumber) AS. If a nonclustered index is being rebuilt, a shared lock is held on the table in question during the operation. In the Shrink database dialog, details about database size will be provided, and an option to choose if files will be reorganized. e. -- Compute fragmentation information for all full-text indexes on the database SELECT c. Index maintenance usually starts 3 hours before the database full backup and ends before the full backup start. When fragmentation is above 30%, rebuild the index. 2) - this is where it might seem you "solved" the problem with index rebuild, but index rebuild could rather be consequence for better, more tailored execution plan for the problematic query/queries. If not specified otherwise, the procedure uses the fill factor that is already set for each index. This topic provides. Note: You can select “Reorganize All” to reorganize all the indexes in the table. - 1: The script will just output the index reorganization or rebuild commands without running them. Which is the best method to reorganize sql server database. With the SQL performance analyzer in DPA, DBAs can check SQL index fragmentation on the server and get pinpointed advice about wait times, SQL statements, and the actual workload—across the past five seconds or five years—they. Object: SQLServer:Databases; Counter: Percent Log Used ; Instance: (your big database name) Alert if counter rises above: 80; Response: Execute job ('Reorganize Check') Create a job ('Reorganize Check') Rebuilding a clustered columnstore index is an offline operation until SQL Server 2019 when the ability to rebuild online was introduced. SQL Server index fragmentation is unavoidable, but you can minimize the negative effects of fragmentation on database performance. The index uses the main filters on the sales table from the time dimension, i. August 21, 2010 at 11:54 pm. dm_db_index_physical_stats ‘ Dynamic Management View (DMV). You can still run the index reorg/rebuild as part of your maintenance scripts. REORGANIZE INDEX blocks other queries. This could be done (and is in some databases) when you make a deletion, but that imposes some performance penalty. or to reorganize use: ALTER INDEX __NAME_OF_INDEX__ ON __NAME_OF_TABLE__ REORGANIZE. A clustered table provides a few benefits over a heap such as controlling how the data is sorted and stored, the ability to use the index to find rows quickly and the ability to reorganize the data by rebuilding the clustered index. 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. I suggest 50% for REORGANIZE, 80% or even 90% for REBUILD. Beginning with SQL Server 2016 (13. Too many full-text index fragments in the full-text index, can lead to substantial degradation in query performance. SQL Server doesn’t automatically correct index fragmentation problems. Databases list. The Full-Text Engine compiles and executes full-text queries. OBJECT_ID) AS TableName, ind. In my last tip, Index Fragmentation Report in SQL Server 2005 & 2008, I discussed what fragmentation is, its different types, its performance impact and what are different methods available in SQL Server 2005 and 2008 to identify fragmentation levels. ” Select the vault database(s). Recall the paper example from above: a rebuild would be like reprinting the document in the correct order and trashing the old ones. dm_db_index_physical_stats(DB_ID(), NULL, NULL, NULL, NULL) indexstats INNER JOIN sys. SQL Server 2012 (11. index_type_desc AS IndexType, indexstats. USE AdventureWorks; GO ALTER INDEX ALL ON Production. SQL Server Tools. You have to do some research and tailoring of how and when to do it based on your environment, though. You can reorganize all indexes that are defined on a table by rebuilding the index data into unfragmented, physically contiguous pages. 1. x), you can create nonclustered B-tree or rowstore indexes as secondary indexes on a clustered columnstore index. When rebuilding offline your index is completely unavailable, but the operation is faster than that online. deteriorating. When the catalog reorganize is occurring the users will still be able to query the full text data?. The schema is the user name under which the table was created. The performance benefit may not be noticeable for indexes that are used primarily for seek operations. Points: 1004494. Expand the Indexes. After finding out almost all databases on my SQL Server had fragmentation over 40%, I decided to do an index rebuild on all tables using a fill factor of 80. Check the column, avg_fragmentation_in_percent and if its greater than. But if you want your script to work you would have to go to index right click select properties and enable row level locking for reorganize to work this is the only optionALTER INDEX REBUILD on an truncated and therefore empty table serves no purpose, so you need to amend your Plan A. Hi Team, Today when I go through some of the SQL Server performance videos, found one interesting video (Please find the link below), where he said that rebuilding indexes is a very expensive thing and it will clear the cache every time an index rebuild happens, (It means that we indirectly killing the SQL Server everything we rebuild. It is causing other queries to wait, even simple ones like: SELECT * FROM tableName WHERE indexedColumn = @value. I figured, the reason was because of the page_count, which was lower than 1000 for each of the indexes that were still very fragmented. The syntax for rebuilding indexes is very simple, we just add the "WITH ONLINE=ON" clause to the ALTER INDEX command. In both these scenarios they are blocked by session 54 – the index rebuild. -Search all indexes of a table that have 5% or more of. If you want to try : I would like you to use READ_COMMITTED_SNAPSHOT isolation level for this operation and see if you succeed. This means every time we need to scan the. If you rebuild the index the stats are updated anyway, so doing it again is just wasteful. The first rebuilds a single index on a table and the second rebuilds all the indexes on the table. Please refer to SQL Server Maintenance Plan Reorganize Index and Update Statistics Tasks to get more information about how to design the maintenance plan. Next the New Job window will open. The log size shouldn't be unrestricted. ALTER INDEX [myIndex] ON [dbo]. We are using clustered columnstore index in SqlServer 2016 for 400M rows. If there are frequent changes to the full-text catalog, use this. dm_db_index_physical_stats DMV to identify the fragmentation. Specifies the table to reorganize. column_name DISABLE; ALTER INDEX. The Full-Text Engine in SQL Server is fully integrated with the query processor. The only way to remove wasted space and restore the correct page ordering is to rebuild or reorganize the indexes on a regular basis. This REBUILD option is available in SQL Server 2008 onwards. I have tried reorganize, rebuild and even tried dropping them and creating again. –In this article. Select the Update Statistics maintenance task from the list of tasks. index_id = 0 -- Heap or table indexstats. First it’ll try an index reorganize, which is an online operation. He has the best practices coded into his scripts, so it should serve you well. Microsoft's guidance on index reorganize and rebuild supports this: For example, if a given index is used mainly for scan operations, removing fragmentation can improve performance of these operations. If you have fragmentation, you need to REBUILD or REORGANIZE. Rebuild or reindex ?? good question ! Analysis indexes defragmentation RATIO and decide to REORGANIZE OR REBUILD. #1258597. 11. 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. I still see questions about SQL Server 2000/2005 pop up on Stack Exchange. Microsoft recommends fixing index fragmentation issues by rebuilding the index. If you cancel a rebuild operation midway, it. Reorganizing an index uses minimal system resources and is an online operation. Examining the clustered index, I discovered that while it has 0% fragmentation listed, it has a page fullness value of only 23%. Under the very wrong assumption that it wouldn't take long, I've ran ALTER INDEX ALL ON OUR_BIGGEST_TABLE REORGANIZE;. The nonclustered B-tree index is updated as changes occur to the columnstore index. SQL Server 2017 includes a new system view sys. Rebuild if > 30%. Expand the Indexes folder. I have maintenance job on SQL Server 2012 Enterprise Edition that runs daily to check index fragmentation and reorganize or rebuild the index based on the percentage of fragmentation. 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. Ignore: Fragmentation levels of 10 percent or less should not pose a performance problem, so you don’t need to do anything. Reorganizing an index uses minimal system resources and is an online operation. That means that it sometime has to contend with blocking because it's sharing the same pages that. These options define how much. avg_fragmentation_in_percent FROM sys. This procedure automatically chooses whether to rebuild or reorganize an index according to its fragmentation level, amongst other parameters, and update statistics. If the tables get more than 15% fragmented, performance is very negatively affected. All you might notice is a drop in performance executing queries while the indexes are gone but dropping and creating a (none-clustered) index has no impact whatsoever on the actual data stored in your tables (Creating a clustered index impacts the physical ordering of your data but again, no data. REORGANIZE, UPDATE STATISTICS and a simple SELECT statement. 1. SSC Guru. It also enables faster growth in the future. Reorganizing only works on the leaf pages. May be index was not there, may be you were just rebuilding the index. Script to reorganize all indexes on all tables in user databases. To learn more about index rebuild and reorganize operations, review this tip. . Disk space is an important consideration when you create, rebuild, or drop indexes. Sorted by: 1. If the index’s design doesn’t allow for that, IndexOptimize will try to rebuild the index online. Users(DisplayName) WITH (ONLINE = ON, RESUMABLE = ON, MAX_DURATION = 1); Those parameters mean: ONLINE = ON means you’ve got the money for Enterprise Edition. 0 databases. Reorganizing an index only deals with the fragmentation that exists, and the more fragmentation there is, the longer a reorganize will take. 環境SQL Server 2012参考前回の以下の投稿に若干手を加えて作成しました。SQL Server の指定したテーブルのインデックス名を取得する方法ストアドプロシージャを実装するC…too slow alter index reorganize/rebuild (with online) I have 2 similar SQL Server installations on 2 similar GCP projects. The first and most popular method is to rebuild indexes. You don’t get bonused based on the amount of free space on your drives. On a data partitioned table, you can reorganize a specific nonpartitioned index on a partitioned table, or you can reorganize all the partitioned indexes on a. August 1, 2013 at 3:52 pm. Feb 21, 2022, 8:01 AM. I'm currently using the approach described here: sys. x) implemented major performance improvements for these index operations. In the Rebuild Indexes dialog box, verify that the correct index is in the Indexes to be rebuilt grid and click OK. You could also refer another query which may be helpful to you. I don't think Windows SQL Server Maintenance has this option yet. . The entire index has to be read to. Product REORGANIZE GO. x) および SQL Server 2014 (12. The following index operations require no additional disk space: ALTER INDEX REORGANIZE; however, log space is required. Yes it will - but only to a certain degree. 2. There is all reason to only rebuild index that are fragmented, and a good maintenance. Reorganizing only works on the leaf pages. SQL Server Index Rebuild and Reorganize Script. However, sometimes you don't want this, say for read only tables or huge tables. Expand the Tables folder. It was trying to do so because when Index is REBUILT (with. Coming to the point out of all there is a database with 51Gb, yes we have seen some big tables majorly occupying space in db. This index design guide contains information on index architecture, and best practices to help you design effective indexes to meet the needs of. INDEX index-name Specifies the index to use when reorganizing the table. If you don’t spend much time with SQL Server and you. This procedure automatically chooses whether to rebuild or reorganize an index according to its fragmentation level, among other parameters, and update statistics with a linear threshold. We are planning to run index rebuild/reorganize on a regular basis in our application. Step 1. SQL Fool (Michelle Ufford) has a great script to do this for you - all done and well tested by many users. Rename. Create an agent WMI alert ('Reorganize Relief Valve') on a performance condition. Test all three and see which is fastest and which gives the least index fragmentation. If you what you are saying is true, even reorganizing the indexes that have never been, may cause a larger impact on the server as well. However, reorganizing can be a "more online" operation and is sometimes preferred, even for. The nonclustered B-tree index is updated as changes occur to the columnstore index. This happens approx. Create a maintenance plan. Bad internal fragmentation (having lots of free space on the pages) means the index is bigger than it needs to be. So far, all good. When you reorganize an index, SQL Server physically reorders the leaf-level pages to match the logical order of the leaf nodes. As well as maintenance plans, SQL Server Agent jobs are also a handy way to automate and schedule index defragmentation jobs in SQL Server. Index Rebuild operation first drops and then recreates the index. 4. This prevents modifications to the table. Same with updating the stats first and then rebuilding. The following options are available on this page. This tool provides index analysis to manage index defragmentation, including rebuild and reorganize fragmented indexes . For example, LDAPDB2. You can also change this threshold via parameters. below line will remove the NULL value from the query. Last weekend the index maintenance took more than 5 hours and the full backup was running at the same time. Indexes with small number of pages (<1000) will usually. As visible in the above image, REBUILD and REORGANIZE are the two available choices to play out the trim operation over the page. Frequency of the maintenance should be considered with the goal of minimizing impact of log generation. 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. The Microsoft Docs page for SQL Server statistics states: Operations such as rebuilding, defragmenting, or reorganizing an index do not change the distribution of data. ". RESUMABLE = ON means you can pause. ALTER INDEX index_name ON table_name REORGANIZE OR. You can do maintenance in phases, where each maintenance phase covers a subset of. در این مقاله روش بهینه سازی ایندکسها با استفاده از reorganize و rebuild کردن ایندکس تکه تکه شده (Fragmented Index) با استفاده از محیط SQL Server Management Studio و Transact-SQL شرح داده خواهد شد. @databaseToCheck (optional) Values: - NULL: It will scan all databases with compatibility level SQL Server 2005 (90) or later for fragmented indexes. Also, some tables/indexes will hardly be fragmented. One of the major reasons I wrote DBCC INDEXDEFRAG for SQL Server 2000 was as an online alternative to DBCC DBREINDEX. If you read complete article it was trying to point out the commands or operations in SQL Server which would require additional disk space and others that would not. This caused the system to reorganize or rebuild some indexes even. One of our DBA says that she does not do reorganizing and rebuilding of indexes on daily and monthly schedule througth maintainance plan, because it will grow the. SQL Agent doesn't connect as SA, and the rebuild index task generates a command that looks like ALTER INDEX [ci_FactInternetSales] ON [dbo]. The select statement is blocking on the clustered index (object id 446624634) whereas the object_name() is blocking on the table (object id 462624691). Reorganizing the indexes will take less time, and less effort from the SQL server thus they can be done in a weeknight type of instances. You should also include page_count value in your query. Also, in our nightly database maintenance plan, I have update statistics, reorganize index and rebuild index tasks setup. The index front is stable, no change. Below the last two rows that displays the fail: Source: Reorganize Index Executing query "ALTER INDEX 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. We don't want to run index optimization on multiple databases at the same time The code uses stored procedure dbo. First, let’s look at the index in this tutorial with sample code to create a non-clustered SQL Server index on a sales table. In this example, the code creates a daily SQL Agent job that runs at 23:30 (11:30 p. 1. To create a new job, right click on SQL Server Agent, select New and then Job. DROP INDEX KIDS1. . Depending on database and indexes size it will grow. sql to our customers's SQL Server instance. To create a new maintenance plan, right click on Maintenance Plan and select New Maintenance Plan and the following window will open. 2. [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. For more information, see Specify Fill Factor for an Index. Reorganize or rebuild an index SQL Server Management Studio. 0. No – alter index rebuild or reorganize. Then, drag and drop Rebuild Index Task into the maintenance plan designer. This would also keep the original order of columns. ALTER INDEX ALL ON table_name REORGANIZE OR. 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. For example, one of the indexes with a page_count of 967 has a fragmentation percentage. Hi, The widely used thresholds are: Reorganize if fragmentation is between 10-30%. For example, the heaviest index (clustered index and also pk) is running reorg for around 4 hours 30 min even do the index was. Select the plus sign to expand the Management folder. Mohamad Mahmoud Darwish. Speaking for SQL Server, I tend to choose a index size and index fragmentation level at which point I begin performing index maintenance. Jan 11 at 14:24. [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. I have this piece of code which helps me rebuild indexes if they are fragmented to a certain percentage. You can still run the index reorg/rebuild as part of your maintenance scripts. So now once you have identified the high fragmentation level in your database, which could. The link points to SQL Server 2014 docs, but the syntax should work on 2005 and 2008 as well. indexes ind ON ind. And if it is a clustered index, the entire table is copied. The query causing the block is in the format: ALTER INDEX [indexName] ON tableName REORGANIZE. Using SQL Server Management Studio: In the Object Explorer pane navigate to and expand the SQL Server, and then the Databases node Expand the specific database with fragmented index Expand the Tables node, and the table with fragmented index Expand the specific table Expand the Indexes node. Under Select a page, select Options. 1. – Ed B. set @SQL = 'alter index ' + QuoteName ( @IndexName ) + ' on ' + QuoteName ( @TableName ) + ' rebuild';. 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. •DatabaseBackup: SQL Server Backup •DatabaseIntegrityCheck: SQL Server Integrity Check •IndexOptimize: SQL Server Index and Statistics Maintenance. In Object Explorer, click the plus sign to expand the database that contains the table on which you want to specify an index's fill factor. The rebuild command will defragment all those intermediate pages. x) and in Azure SQL Database, we recommend using ALTER INDEX REORGANIZE instead of ALTER INDEX REBUILD for. To create a new job, right click on SQL Server Agent, select New and then Job. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) Poorly designed indexes and a lack of indexes are primary sources of database application bottlenecks. Specify the name of the maintenance plan. In the SQL Management Studio Console, expand Management > Right Click Maintenance Plan and select Maintenance Plan Wizard. [FactInternetSales] REBUILD PARTITION = ALL WITH (PAD_INDEX = ON, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF,. For more information, see Data Types (Transact-SQL). If the index’s design or your SQL Server edition doesn’t allow for that, it’ll perform the last resort – an offline index rebuild. . dm_db_index_physical_stats in a script to rebuild or reorganize indexes). Index maintenance usually starts 3 hours before the database full backup and ends before the full backup start. We would like to show you a description here but the site won’t allow us. This is a best practice for performance when you rebuild or reorganize indexes. If the index’s design doesn’t allow for that, IndexOptimize will try to rebuild the index online. So stay tuned as we should have a follow up post soon on his findings and recommendations for. This means every time we need to scan the. The Index Reorganize operation physically reorders leaf level pages of the index to match the logical order of the leaf nodes. And also seen fragmentation for most of the tables in it hence initially created a reorganize index maintenance plan and executed but it is being run for the last two days. Scale back down once the index rebuild is complete. Before using it, note that “Rebuild” and “Reorganize” are two different operations, even though they both reduce fragmentation in the index. Expand the Indexes folder. When using columnstore indexes, the delta store may end up with multiple small row groups after inserting, updating, and. Microsoft recommends Index Rebuild operation to defrag indexes if the fragmentation level of your index is greater. SQL Server 2019 adds resumable online index creation, and it’s pretty spiffy: 1. SQL Server - Reorganize and Rebuild Indexes :. For maintenance i create a procedure that: -Shrink Database file (if is enabled) -Shrink Database log file. In this article. Sorted by: 2. I know the sql to perform this action on all indexes in a table is. cyNumber) AS cyNumber, MAX (b. You can use sys. On the Table Designer menu, click Indexes/Keys. The algorithm to build an index from scratch is different to that which maintains it as data arrives so these non-clustered indexes will be unfragmented too. Summary: SharePoint Server uses SQL Server to store most of the content for the Web site and configuration settings. 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. DROP INDEX when you are dropping a clustered index offline without specifying the MOVE TO clause and nonclustered indexes do not exist. Rebuilding an index can be executed online or offline. dm_db_index_physical_stats) is <1000 you don't need to rebuild or reorganize such. alter index all on table_name reorganize; But I only want to rebuild or reorganize if fragmentation percentage on each index is between a certain range. Also, up to SQL Server 2008 R2, you could not perform online rebuild on Large Object (LOB) data: varchar(max), nvarchar(max), varbinary(max), or XML. DROP INDEX when you are dropping a nonclustered index. index rebuild/reorganize frequency. In SQL Server, you "might" run into issues with "updating primary key". This sample T-SQL script performs basic maintenance tasks on SUSDB 1. For example, we have a set of tables that support an application. Don’t shrink your database files just to free up drive space. The more the fragmentation you need to rebuild if its less you can reorganize. 2. 5) Perform full database backup. Index rebuilding process uses more CPU and it locks the database resources. @OnlyModifiedStatistics = 'Y'. Basically, an index rebuild copies the index to another place. The procedure uses SQL Server ALTER INDEX command, with the REORGANIZE option NULL. Rebuild and Reorganize Index using SQL Server Management Studio (SSMS) Find and expand the table in Object Explorer >> Open Indexes >> Right-click on the target index >> Rebuild or Reorganize. To run the Maintenance plan, make sure your SQL server agent service is running. Maybe I should explain. In SQL Server, the ALTER INDEX statement is used to modify an existing index. 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. If page_count value( which is there in DMV sys. Mohamad Mahmoud Darwish. Select “reorganize index” and “rebuild index. In it, enter the Job name, owner, optionally Category. This is a powerful feature that you can use to your advantage. You can also see if a reorganize will help until you can do a full rebuild. We need to set these parameters for the job IndexOptimize - USER_DATABASES: @UpdateStatistics = 'ALL'. The table can be in a local or a remote database. Maintenance. Here is the image for additional clarity. 2 Answers. REORGANIZE. Default SQL Server value is 0 or 100%, which means that no free space should be left on each page. Create an agent WMI alert ('Reorganize Relief Valve') on a performance condition. Make sure to thick the Enabled checkbox. The column Rebuild_Index_SQL in the vColumnstoreDensity view contains an ALTER INDEX REBUILD statement that can be used to rebuild your indexes. On a data partitioned table, you can reorganize a specific nonpartitioned index on a partitioned table, or you can reorganize all the partitioned. Proceed to the Steps tab: Clicking on New. To fix the fragmentation either rebuild or reorganize the index on the table. In SQL Server, you "might" run into issues with "updating primary key". For instance, in the Maintenance Plans of SQL Server 2017, it is possible to rebuild only those indexes where fragmentation level is higher than a specific percentage and has more pages than specified in "Page Count". SQL Server 2005 Index Rebuild/Reorganize. To rebuild an index means to create anew one, then drop the old one. Product REBUILD. Right-click the Maintenance Plans folder and select New Maintenance Plan. This could be further tweaked to handle only indexes that need maintenance based on fragmentation levels as well as then doing either an index reorg or an index rebuild.