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Content with tags Performance Tuning, Indexing Rss

<< Newer    Items 21 to 40 of 57    Older >>
 

An Un-indexed Foreign Key Gotcha

Indexing is important for improving performance, but do you know that a lack of indexes might actually cause things to stop working? Alok Dwivedi brings us a very interesting scenario where the lack of an index causes a problem with concurrency.  Read more...
By Alok Dwivedi 2009/11/09 | Source: SQLServerCentral.com | Category: t-sql
Rating: |  Discuss |   Briefcase | 10,718 reads

The Ultimate Index-Less Foreign-Key Finder

Searches for foreign key constraints that don't have fully matching indexes. The best partial matching indexes are outputted with MatchCounts and column comparisons.  Read more...
By Jesse Roberge 2009/10/15 | Source: SQLServerCentral.com | Category: administration
Rating: |  Discuss |   Briefcase | 1,308 reads

Targeted Index Performance Improvements

This article identifies which indexes are used when T-SQL code runs, and proposes ways of improving these targeted indexes, leading to better performing code.  Read more...
By Ian Stirk 2012/08/03 (first published: 2009/09/17) | Source: SQLServerCentral.com | Category: performance tuning
Rating: |  Discuss |   Briefcase | 41,997 reads

Understanding Scans And Seeks

Whether a query uses Scan or Seek can have a big impact on the cost of excuting that query. This article examines when each is used and which is optimal.  Read more...
By Additional Articles 2009/09/10 | Source: SQL Server Performance | Category: indexing
Rating:  Rate this |   Briefcase | 5,719 reads

Indexes

By VM-723206 2009/09/07 | Category: performance tuning
Rating: (not yet rated) |  Discuss |   Briefcase | 4,219 reads

Back to basics: Optimizing SQL Server indexes

When created and maintained correctly, indexes help SQL Server retrieve data quickly. See how to ensure your SQL Server environment is running up to speed.  Read more...
By Additional Articles 2009/08/21 | Source: SearchSQLServer | Category: indexing
Rating:  Rate this |   Briefcase | 6,578 reads

Using Indexes to Reduce Blocking in Concurrent Transactions

New author Nilav Ghosh brings us a performance tuning article to help your queries run better. This article examines how indexes can help reduce blocking.  Read more...
By Nilav Baran Ghosh 2013/11/15 (first published: 2009/07/07) | Source: SQLServerCentral.com | Category: performance tuning
Rating: |  Discuss |   Briefcase | 18,036 reads

The Ultimate Dupe Finder & Performance Test Parameter Set Researcher

Finds the largest dupe-sets of one or more columns of a single table or derived table. Great for finding hoggy parameter combinations for perf-testing queries within stored procedures!  Read more...
By Jesse Roberge 2009/05/29 | Source: SQLServerCentral.com | Category: administration
Rating: |  Discuss |   Briefcase | 872 reads

SQL Server Optimization

This article describes different ways of improving the performance of SQL Server queries, with a focus on index optimization.  Read more...
By Additional Articles 2009/05/08 | Source: TechNet Blogs | Category: performance tuning
Rating: (not yet rated)  Rate this |   Briefcase | 5,120 reads

The Ultimate Index Width Stats Reporter

Reports index length stats for indexes who's lengths exceeding parametrized thresholds (defaults to 0 - get all) for total length and seek length, optionally filtering schemas and tables.  Read more...
By Jesse Roberge 2013/07/26 | Source: SQLServerCentral.com | Category: t-sql
Rating: |  Discuss |   Briefcase | 2,202 reads

Finding a better candidate for your clustered indexes

When creating tables it is difficult to determine exactly how the data will be accessed. Therefore when clustered indexes are chosen they are often just the ID column that makes the row unique. This may be a good choice, but once the application has been used and data access statistics are available you may need to go back and make some adjustments to your tables to ensure your clustered indexes are providing a benefit and not a drain on your applications.   Read more...
By Additional Articles 2008/12/26 | Source: MSSQLTips.com | Category: indexing
Rating:  Rate this |   Briefcase | 3,463 reads

Using SQL Server DMVs to Identify Missing Indexes

I can run the Database Tuning Advisor or examine the query plans, but is there any easier way to determine which indexes may be needed?  Read more...
By Additional Articles 2008/12/08 | Source: MSSQLTips.com | Category: performance tuning
Rating:  Rate this |   Briefcase | 1,934 reads

Are Your Indexes Being Used Effectively?

This article shows how to use the dm_db_index_usage_stats DMV to identify if an Index is being used on not  Read more...
By Additional Articles 2008/11/24 | Source: SQL Server Performance | Category: indexing
Rating:  Rate this |   Briefcase | 5,968 reads

The Ultimate Prospective-Index Column(s) Selectivity Analyzer

Gets single-column and cumulative-column selectivity stats and @Top largest dupe sets for each cumulative column stepping for a set of one or more columns for a table.  Read more...
By Jesse Roberge 2008/10/24 | Source: SQLServerCentral.com | Category: indexing
Rating: |  Discuss |   Briefcase | 2,065 reads

The Ultimate Duplicate Index Finder

Searches database-wide for multiple indexes in the same table which has the same column as the first seek key. Optionally limits to LIKE wildcard patterns of table and schema names.  Read more...
By Jesse Roberge 2008/10/17 | Source: SQLServerCentral.com | Category: indexing
Rating: |  Discuss |   Briefcase | 2,979 reads

The Ultimate Index Usage Reporter

Reports index stats, index size+rows, member seek + include columns as two comma separated output columns, and index usage stats for one or more tables and/or schemas.  Read more...
By Jesse Roberge 2012/12/27 | Source: SQLServerCentral.com | Category: indexing
Rating: |  Discuss |   Briefcase | 7,477 reads

The Ultimate Index Lister (Pivoted)

Lists details for all indexes on one or more tables / schemas, including row count and size. This version outputs the member seek + include columns as two comma separated output columns.  Read more...
By Jesse Roberge 2008/10/09 | Source: SQLServerCentral.com | Category: indexing
Rating: |  Discuss |   Briefcase | 2,409 reads

The Ultimate Index Lister (Non-Pivoted)

Lists details for all indexes on one or more tables / schemas, including row count and size. The non-pivot version also gives data type and other details for the columns.  Read more...
By Jesse Roberge 2013/10/02 | Source: SQLServerCentral.com | Category: indexing
Rating: |  Discuss |   Briefcase | 3,574 reads

The Ultimate Missing Index Finder

Reports stats on what the query optimizer records in the DMVs as missing indexes and what it says the cost savings will be if they were present. Can limit by table / schema name patterns.  Read more...
By Jesse Roberge 2013/01/07 | Source: SQLServerCentral.com | Category: indexing
Rating: |  Discuss |   Briefcase | 18,627 reads

Index covering

By Mark Horninger 2008/09/03 | Category: indexing
Rating: (not yet rated) |  Discuss |   Briefcase | 3,617 reads
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