2010年6月2日 · These two videos (Clustered vs. Nonclustered Index Structures in SQL Server and Database Design 39 - Indexes (Clustered, Nonclustered, Composite Index) ) are very …

2024年12月30日 · The main differences are: 1) OFFLINE index rebuild is faster than ONLINE rebuild. 2) Extra disk space required during SQL Server online index rebuilds. 3) SQL Server …

Can anyone provide the script for rebuilding and re-indexing the fragmented index when 'avg_fragmentation_in_percent' exceeds certain limits (better if cursor is not used)?

Indexes in SQL Server 2005/2008 – Best Practices, Part 1 Indexes in SQL Server 2005/2008 – Part 2 – Internals One thing to note, clustered indexes should have a unique key (an identity …

Correct. Indexes can be composites - composed of multiple columns - and the order is important because of the leftmost principle. Reason is, that the database checks the list from left to right, …

2009年4月20日 · How do I get a list of all index & index columns in SQL Server 2005+? The closest I could get is: select s.name, t.name, i.name, c.name from sys.tables t inner join …

Given that indexing is so important as your data set increases in size, can someone explain how indexing works at a database-agnostic level? For information on queries to index a field, check …

When PK or UK is created, SQL Server automatically creates unique index for that constraints. The create_date of those constraints will be the same as the create date for the corresponding …

1 Mentioned in Bacon Bits comment Ola Hallengren's SQL Server Maintenance Solution IndexOptimize is supported on SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, …

As a follow up to "What are indexes and how can I use them to optimise queries in my database?" where I am attempting to learn about indexes, what columns are good index candidates? …