Values: - 0: The script will reorganize or rebuild the fragmented indexes. (About 1 TB of data including myIndex (non-clustered)). fulltext_index_fragments GROUP BY OBJECT_NAME([table_id]) HAVING COUNT([fragment_id]) >=30 Also,. If you cancel a rebuild operation midway, it. The query result is matched against the full-text index. Since you issued a REBUILD and not a REORG, cancelling the query will result in a rollback which will take even more time. ALTER INDEX index_name ON table_name REORGANIZE OR. 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. If you what you are saying is true, even reorganizing the indexes that have never been, may. Under Select a page, select Options. And if the reorganize is a deadlock. You should also include page_count value in your query. Plan B is fine. You can use Ola's Index maintenance solution or Michelle Ufford's - Index Defrag Script. Server Configuration: MS SQL Server 2008 Enterprise Windows Server. TEST_INDX(id int, bla varchar(255)); CREATE INDEX IX1 ON dbo. DROP INDEX when you are dropping a nonclustered index. The reason given is that the indexes and statistics are partly based on available CPU and memory resources. Syntax ALTER INDEX index_name ON table_name. If a nonclustered index is being rebuilt, a shared lock is held on the table in question during the operation. 10/28/2022. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) Convert a rowstore table to a clustered columnstore index, or create a nonclustered columnstore index. Reorganize does not holds blocking locks. Rename. 0 databases. To reorganize index SQL Server, right-click it & choose Reorganize. Someone else set it up. Reorganizing an index is always executed online. Hallengren website has an option to reorganize indexes say with 5% Fragmentation, and rebuild for 30% Fragmentation. 7. Rebuilds are generally faster. Product REBUILD. The only way to remove wasted space and restore the correct page ordering is to rebuild or reorganize the indexes on a regular basis. Starting with SQL Server 2016 (13. In the Rebuild Indexes dialog box, verify that the correct index is in the Indexes to be rebuilt grid and click OK. However, the meaning of those operations is different in the case of Columnstore. This has been found by using the schema change report in sql server 2005 and fixed by changing the job time of the Reorganize index. As of this writing, our super smart SQL Architect and Performance Expert (Jeff Schwartz) is working on some testing to see if there is any measurable overhead to all the misleading out-of-space messages generated during index REORGANIZE maintenance. There are two files attached - one for versions prior to 6. Artemakis Artemiou. It is recommended to use an integer data type in the index. Improve this answer. Reorganizing an index only deals with the fragmentation that exists, and the more fragmentation there is, the longer a reorganize will take. There is all reason to only rebuild index that are fragmented, and a good maintenance. ALTER INDEX [myIndex] ON [dbo]. In SQL Server, you "might" run into issues with "updating primary key". This removes fragmentation, reclaims disk space by compacting the pages based on the specified or existing fill factor setting. 1. : 15% com. Also trying to avoid logging to transaction log and log. The entire index has to be read to. From SQL Server 2012 Enteprise and later there is not such restriction. 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. Here are a couple of examples. SQL Server Tools. m. Depending on database and indexes size it will grow. Applies to: SQL Server. This job needs to be scheduled and ran on a weekly basis due to large data. index optimization job failed from the last 4 days. Reorganize or rebuild an index SQL Server Management Studio. Next time it runs slow, check out how fragmented the clustered and non clustered indexes are, and also check to see if you have AUTO_UPDATE Stats enabled!I would suggest that you use Ola Hallengren's scripts, freely available and widely used. from truncation) in 7 hours. You cannot say, “If the index is 45% or more fragmented, rebuild it– otherwise do nothing. It defragments the leaf level of clustered and non-clustered indexes on tables and views by physically reordering the. To learn more about index rebuild and reorganize operations, review this tip. For more information, see ALTER INDEX (Transact-SQL). Let’s discuss both of these methods with example:- 1)Rebuild Index Rebuilding indexes completely drops and re-creates the database indexes. Click OK. Rebuilding an index can be executed online or offline. Sorry No idea why this happened. Reorganize: Reorganize indexes with between 11-30 percent fragmentation. It is used when the operation takes a. In the Object Explorer panel locate the database in question, and use right mouse click to bring up the context menu. I have an index on a . Reorganizing also compacts the index pages. 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. Many people (and even solutions) in the SQL Server community say you need to look at Index Fragmentation levels (e. As with a B-tree index, the rebuild will create a brand new columnstore index from the underlying data. We need to drag and drop tasks from the Toolbox (to open the toolbox use Ctrl + Alt + X) into the gray workspace area on the bottom as shown in the below screenshot. The index front is stable, no change. REBUILD will not just rebuild index, but also force update of corresponding statistics. This tool provides index analysis to manage index defragmentation, including rebuild and reorganize fragmented indexes . This opens the Toolbox and the maintenance_plan_name [Design] surface with the Subplan_1 subplan. ), which reorganizes all the indexes on the. The T-SQL script in this article can be run by SQL Server administrators to reindex and defragment WSUS databases. Change it to be weekly or even less frequently. To create SQL Server agent that will defragment specified indexes automatically, perform the following steps: Expand SQL Server Agent in Object explorer, right click on Jobs, and select New Job…: In General tab, specify the name and description for the job. Defragmentation in Practice. SQL Server development version and Enterprise version has option ONLINE, which can be turned on when Index is rebuilt. I don't remember if IDENTITY INSERT ON will help. When the catalog reorganize is occurring the users will still be able to query the full text data?. It's a great piece of work - it allows you to define fragmentation levels for which you. This would also keep the original order of columns. For example, we have a set of tables that support an application. 1. Yup, that is one perfectly valid way. This means that for a lightly fragmented index (e. SQL Fool (Michelle Ufford) has a great script to do this for you - all done and well tested by many users. But commit your whole transaction before reorganize. That can be found using the STATS_DATE function. Here we would like to introduce you to the three most common ways of how to Reorganize and Rebuild Indexes. avg_page_space_used_in_percent column in the sys. 3,895 9 51 78. An index rebuild will always build a new index, even if there’s no fragmentation. Method 1: Create a SQL Server Agent job to rebuild indexes and update statistics. The syntax for rebuilding indexes is very simple, we just add the "WITH ONLINE=ON" clause to the ALTER INDEX command. 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. WITH FULLSCAN Are there any advantages or disadvantages to using "UPDATE STATISTICS (Index name)" as opposed to "ALTER INDEX (index name) ON. Ignore: Fragmentation levels of 10 percent or less should not pose a performance problem, so you don’t need to do anything. When you rebuild indexes Offline, the operation acquires a Schema modification (Sch-M) lock on the table. Best regards,. 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. Any full-text indexes of non-trivial size with fragmentation of at least 10% will be flagged to be re-built by our over-night maintenance. [CCS-KIDS1] GO. From a transaction log standpoint, reorganize index generates a lot more small transactions and can lead to substantially more resource-consumption than a rebuild. #1637994. ALTER INDEX ALL ON [table_name] REBUILD; Additionally, please note that index reorganization is an online operation and index rebuilding is an offline operation unless explicitly specified as an online. Reorganize/Rebuild SQL Server database indexes using ApexSQL Defrag ApexSQL Defrag is a 3rd party tool made specifically to automatically fix index fragmentation in SQL Server databases. 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. Rebuild/Reorganize indexes weekly – As it was mentioned previously, this will depend on the environment, situation, database size, etc. Here are a couple of examples. The first rebuilds a single index on a table and the second rebuilds all the indexes on the table. ALTER INDEX . Note that the time it takes to complete the operations depends on the size of the database and how fragmented the indexes. 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. FileID, a. -- Compute fragmentation information for all full-text indexes on the database SELECT c. You can still run the index reorg/rebuild as part of your maintenance scripts. Best regards, Carrin Cancelling / Stopping ALTER INDEX REORGANIZE. dm_db_index_physical_stats (Transact-SQL). Maintain Index and Column StatisticsAs people have mentioned here, your indexes do not automatically rebuild. Create a job to run your index reorganize ('Reorganize'). If you need more tempdb space, scale up the pool. failed with the following error: "The index "SpatialIndex-20180705-165942" on table "extended_index_113435478_384000" cannot be reorganized because page level locking is disabled. x) では、REORGANIZE は CLOSED 行グループを列ストアに圧縮するためにのみ使用されます。 最適化操作を実行し、すべてのデルタ行グループを列ストアに強制的に移動する唯一の方法は、インデックスを再構築することです。Yes, just the table and any query that tries to access that table. Make sure to thick the Enabled checkbox. How to Reorganize and Rebuild Indexes using T-SQL. Starting from SQL Server 2016, new options were added to the index maintenance tasks that allow us to perform the Rebuild Index and Reorganize Index tasks, based on the fragmentation percentage of the index, and other useful options to control the index maintenance process. In SQL Server, you "might" run into issues with "updating primary key". So it can remove some fragmentation - but only on a limited scale. Use a columnstore index to efficiently run real-time operational analytics on an. Note: You can select “Reorganize All” to reorganize all the indexes in the table. It is causing other queries to wait, even simple ones like: SELECT * FROM tableName WHERE indexedColumn = @value. In the infrequent cases where you do need to reorganize or re-build index, consider these: Run index maintenance during off peak period. To correct index fragmentation, you can reorganize an index or rebuild an. On the Define Reorganize Index Task page, select the server or servers where you'll be moving index pages into a more efficient search. We need to set these parameters for the job IndexOptimize - USER_DATABASES: @UpdateStatistics = 'ALL'. The performance benefit may not be noticeable for indexes that are used primarily for seek operations. It drops index entirely and creates it from scratch. Index maintenance usually starts 3 hours before the database full backup and ends before the full backup start. The execute sql task should contain the index rebuild code along with stats rebuild . 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. I suggest 50% for REORGANIZE, 80% or even 90% for REBUILD. First, we will start the index reorganization in a session using the following T-SQL code. It’s advisable to remove those often. To correct index fragmentation, you can reorganize an index or rebuild an. Index rebuilds look. Add a comment. Regards. There needs to be an automated Index defragmentation job that will either reorganize or rebuild the indexes based on the fragmentation level for a specific table in a specific database. dm_db_index_physical_stats(DB_ID(), NULL, NULL, NULL, NULL) indexstats INNER JOIN sys. So far, all good. 5) Perform full database backup. " failed with the following error: "Transaction (Process ID 94) was deadlocked on lock resources with another process and has. Monitor tempdb during rebuild operations. For general guidance regarding index fragmentation, when fragmentation is between 5% and 30%, reorganize the index. This statement essentially merges all the fragments. Fair enough, but let’s make some adjustments. This would also keep the original order of columns. To run the Maintenance plan, make sure your SQL server agent service is running. Rebuild Index. Also, in our nightly database maintenance plan, I have update statistics, reorganize index and rebuild index tasks setup. REORGANIZE statement. Quick explanation: An online Rebuild, rebuilds the indexes on the tempDB making it available to the queries while it is being rebuilt. Right-click the table on which the full-text index is defined, select Full-Text index, and on the Full-Text index context menu, select Properties. 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. From cruel experience, I know that I can repopulate that table from scratch (i. As well as maintenance plans, SQL Server Agent jobs are also a handy way to automate and schedule index defragmentation jobs in SQL Server. Applies to: SQL Server. Jan 11 at 14:24. SQL Server Magazine just tweeted about their latest article, a. The first and most popular method is to rebuild indexes. Index should be reorganized when index fragmentation is between 10% to 40%. Script and result below: ALTER INDEX ALL ON Fragmented REORGANIZE GO1 Answer. It's better to do reorg on Nightly. You can read more on rebuilding indexes here . However, you can create a staging table insert all rows into that, drop original table and rename staging table to original. •DatabaseBackup: SQL Server Backup •DatabaseIntegrityCheck: SQL Server Integrity Check •IndexOptimize: SQL Server Index and Statistics Maintenance. Note In SQL Server 2012 (11. · Add the startup option -T1222 to SQL. I am a new DBA to a SQL 2005 production Report server. Share. sql to our customers's SQL Server instance. We don't want to run index optimization on multiple databases at the same time The code uses stored procedure dbo. When an index becomes skewed, parts of an index are accessed more frequently than others. This topic provides. They are also configured from SSMS. 11. Create a execute sql task and schedule it through sql agent . @LeeWalters shrink is done, and yes, due to disk issues, not possible to add drives, that's why, in addition, db is populated with blob data, so the question is more from the index fragmentation side. Next the New Job window will open. For more information, see CREATE INDEX (Transact-SQL). 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. Unlike DBCC INDEXDEFRAG, or ALTER INDEX with the REORGANIZE option, DBCC DBREINDEX is an offline operation. SQL Server ALTER INDEX Syntax. This job needs to be scheduled and ran on a weekly basis due to large data load. Dec 19, 2021, 9:55 PM. This is quite a big problem in SQL Server, as your indexes will fragment over time. Coming to update stats, I would prefer to do it with Full Scan depending on the size of the databases. It is compatible with all versions of SQL Server 2005 , 2008 , 2012 , 2014 and 2016. x), you can create nonclustered B-tree or rowstore indexes as secondary indexes on a clustered columnstore index. instead, you do it separately in order to do it more or less batch mode. Usually, you should rebuild the index if it has a fragmentation greater than 30% and reorganize it if it has less than 30% fragmentation. You can also see if a reorganize will help until you can do a full rebuild. Frequency of the maintenance should be considered with the goal of minimizing impact of log generation. We would like to show you a description here but the site won’t allow us. If you use Ola Hallegren's scripts then you can set the thresholds for a rebuild/reorganise (say over 50% fragmentation for a reorganise, over 80% for a rebuild) and this can run overnight out of hours. ” Select the vault database(s). e. OBJECT_ID) AS TableName, ind. How Fragmentation Hurts SQL Server Performance. Index Rebuild : This process drops the existing Index and Recreates the index. less than 30% fragmentation), it’s generally faster to reorganize the index, but for a more heavily fragmented index, it’s generally faster to just. The REORGANIZE modifier for ALTER INDEX is not currently supported by Azure SQL. Large object data is data with the image, text, ntext, varchar (max), nvarchar (max), varbinary (max), or xml data type. SQL Server doesn’t automatically correct index fragmentation problems. REORG INDEXES/INDEXES command reorganizes indexes. Depending on database and indexes size it will grow. Article. Yes it will - but only to a certain degree. You can also set a threshold so that it only considers indexes over a certain size so you're not doing unnecessary rebuilds on tiny indexes. Rebuild or Reorganize SQL Index. In an MS-SQL Server. Maintenance. If you search for index rebuilding, you will find many complex scripts on the web, but this can also be done. 3) Reorganize indexes. . 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. The table can be in a local or a remote database. In this article. Setup a new job to run update stats via IndexOptimize daily. Then, choose New, Job to create a SQL agent job. Because I was blamed for the slow SQL Server mainly because I. Index Rebuild : This process drops the existing Index and Recreates the index. When rebuilding offline your index is completely unavailable, but the operation is faster than that online. [Product] SET ( ALLOW_PAGE_LOCKS = ON ) ALTER INDEX [PK_Product] ON [Production]. To check the maintenance plan agent job, open the Job Activity Monitor window, and check if the job is enabled, executing or idle, the last. As visible in the above image, REBUILD and REORGANIZE are the two available choices to play out the trim operation over the page. [Test] REBUILD WITH (ONLINE = ON); Additionally, I would only rebuild indexes which require it. Reorganize/Rebuild SQL Server database indexes using ApexSQL Defrag ApexSQL Defrag is a 3rd party tool made specifically to automatically fix index fragmentation in SQL Server databases. I want to reorganize or rebuild indexes. Identifies indexes that are fragmented and defragments them. Any full-text indexes of non-trivial size with fragmentation of at least 10% will be flagged to be re-built by our over-night maintenance. Near the top of the script, around line 32, you will see a line of Transact-SQL code that looks like this: 1. Expand Tables. There are two ways of doing that: (i) by using the ‘ DBCC SHOWCONTIG ‘ command, and (ii) by using the ‘ sys. INDEX_REORGANIZE Reorganizes the index. Optimize SQL Server non-clustered indexes and queries by considering index fields, compound indexes and SQL Server statistics. The process uses the existing pages only and does not allocate new ones, but it does compact the index pages. 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. Both versions allow you to specify the. This means long-term object-level locks are not held and queries or updates to the underlying table can continue during the ALTER INDEX. Microsoft recommends fixing index fragmentation issues by rebuilding the index. This means every time we need to scan the. Beginning with SQL Server 2016 (13. Designing the SQL Server Reorganize Index Task The script below allows you to rebuild indexes for all databases and all tables within a database. I think there is another way to rebuild fragmented index, You can create an sp and scheduled it via SQL Server Agent or via task scheduler. A clustered index's key columns are called a clustering key. 2. The database is using the Simple Recovery model. dm_exec_requests to see how much longer your query has to finish. If the index. SQL Agent doesn't connect as SA, and the rebuild index task generates a command that looks like ALTER INDEX [ci_FactInternetSales] ON [dbo]. Script to reorganize all indexes on all tables in user databases. This means loading the table and building all nonclustered indexes before moving on to the next one. In both these scenarios they are blocked by session 54 – the index rebuild. -- Rebuild or reorganize indexes based on their fragmentation levels DECLARE @work_to_do TABLE ( objectid int , indexid int , pagedensity float , fragmentation float , numrows int ) DECLARE @objectid. 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。. 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. First of all you need to find the fragmentation percentage for the indexes in a database or table. Reorganize a fragmented SQL Server index and optimize performance. Hi @Devendra Kumar Sahu , You can perform a reorg or rebuild an index based on its fragmentation values. Right-click Maintenance Plan and select Execute. 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%. Reorganize Index Task Forum – Learn more on SQLServerCentral. below line will remove the NULL value from the query. The performance of large WSUS deployments will degrade over time if the WSUS database isn't maintained properly. Index Fragmentation and out of date statistics! Don't forget stats, it's one of the most important factors in SQL Server deciding whether or not to use a index. e. This task uses the ALTER INDEX. Under the very wrong assumption that it wouldn't take long, I've ran ALTER INDEX ALL ON OUR_BIGGEST_TABLE REORGANIZE;. Thank you all for your suggestions. #1162454. It cames in two flavours: online and offline. Script to Manage SQL Server Rebuilds and Reorganize for Index Fragmentation. 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. On the right panel, right-click SQL Server Agent. Expand the Tables folder. The index reorganize operation will be always performed online. Below the last two rows that displays the fail: Source: Reorganize Index Executing query "ALTER INDEX [PK_xxTableName] O. ALTER INDEX ALL ON table_name REORGANIZE OR. To create SQL database maintenance plan, launch SQL Server Management Studio > expand the database instance > Management > right-click on the maintenance plan > New Maintenance Plan. SQL Server 2017 includes a new system view sys. USE AdventureWorks; GO ALTER INDEX ALL ON Production. The link points to SQL Server 2014 docs, but the syntax should work on 2005 and 2008 as well. Monitor and track your index usage, or lack of index usage. The fill factor determines the amount of empty space on each page in the index, to accommodate future expansion. Use Ola Hallengren ‘s IndexOptimize but don’t use his defaults. Large tables should be in their own full-text catalog. The column Rebuild_Index_SQL in the vColumnstoreDensity view contains an ALTER INDEX REBUILD statement that can be used to rebuild your indexes. dm_db_index_physical_stats fincation have index_id which display heap and index informatiob. e. REBUILD will not just rebuild index, but also force update of corresponding statistics. Maybe I should explain. ) Reorganize = fragmentation level is between 5% and 30%. Use the Rebuild Index Task dialog to re-create the indexes on the tables in the database with a new fill factor. ) rebuilt all indexes on the table. The default value for this parameter will be ‘CATALOG’. less than 30% fragmentation), it’s generally faster to reorganize the index, but for a more heavily fragmented index, it’s generally faster to just. . Therefore, you do not need to update statistics after performing ALTER INDEX REBUILD, DBCC DBREINDEX, DBCC INDEXDEFRAG, or ALTER INDEX REORGANIZE operations. Use Ola Hallengren ‘s IndexOptimize but don’t use his defaults. Well, I’d wager some of it is backwards compatibility. There is all reason to only rebuild index that are fragmented, and a good maintenance. If you have fragmentation, you need to REBUILD or REORGANIZE. This can be checked using:. Your new index will have the size non less than the size of disabled index. For example, LDAPDB2. You can drop and create indexes at will. CREATE INDEX IX_DisplayName ON dbo. For a dedicated SQL pool table with an ordered CCI, ALTER INDEX REBUILD will re-sort the data using tempdb. It should be: TRUNCATE; Insert ; ALTER INDEX REBUILD; It might stil be slow, but at least you get sharp indexes. g. before i answer your question is the database on simple recovery. index_id > 0 -. If an index is between 10% and 30% fragmented, I will REORGANIZE the index and UPDATE the statistics. ALTER INDEX [myIndex] ON [dbo]. Users(DisplayName) WITH (ONLINE = ON, RESUMABLE = ON, MAX_DURATION = 1); Those parameters mean: ONLINE = ON means you’ve got the money for Enterprise Edition. sql script from Ola’s website and open it up in a query window inside of SSMS. We have decided to use the following code to compute a fragmentation % for each full-text index. 1. Create an agent WMI alert ('Reorganize Relief Valve') on a performance condition. Let’s first drop the Clustered Columnstore index that we created above using the below command. DROP INDEX when you are dropping a clustered index offline without specifying the MOVE TO clause and nonclustered indexes do not exist. 2. August 21, 2010 at 11:54 pm. x), you can create nonclustered B-tree or rowstore indexes as secondary indexes on a clustered columnstore index. Yes, rebuilding indexes will take a toll on your transaction log file. For us to perform this test we will first create a simple test table with a few columns and load a fair amount of data into it. And if it is a clustered index, the entire table is copied. The difference is easily visible. Bad internal fragmentation (having lots of free space on the pages) means the index is bigger than it needs to be. 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. You don’t get bonused based on the amount of free space on your drives. To create SQL database maintenance plan, launch SQL Server Management Studio > expand the database instance > Management > right-click on the maintenance plan > New Maintenance Plan. Basically, an index rebuild copies the index to another place. My predecessor created a Maintenance Plan with 4 tasks: CHECKDB; SHRINKDATABASE (N'DB1',10,TRUNCATEONLY); it seems to be running a REORGANIZE on all Indexes for all Tables and Views and "Compact Large Objects" is checked; and then it UPDATE. The index uses the main filters on the sales table from the time dimension, i. For now, I have just turned off the weekly index reorganize task which is not really a good long term solution. Eliminate all deleted rows. It is causing other queries to wait, even simple ones like: SELECT * FROM tableName WHERE indexedColumn = @value.