indexing - What is an index in SQL? - Stack Overflow
Jun 2, 2010 · These two videos (Clustered vs. Nonclustered Index Structures in SQL Server and Database Design 39 - Indexes (Clustered, Nonclustered, Composite Index) ) are very helpful …
sql server - How do you check if a certain index exists in a table ...
Apr 22, 2010 · Something like this: SELECT * FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE CONSTRAINT_NAME …
sql - What are indexes and how can I use them to optimize queries …
Mar 9, 2014 · Indexes are a balancing act, every index you add usually will add time to data inserts, updates and deletes but can potentially speed up selects and joins in complex inserts, …
sql - Creating an index on a table variable - Stack Overflow
May 20, 2009 · In SQL Server 2000 - 2012 indexes on table variables can only be created implicitly by creating a UNIQUE or PRIMARY KEY constraint. The difference between these …
sql - How does database indexing work? - Stack Overflow
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 …
indexing - How often should the indexes be rebuilt in our SQL …
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, …
sql - How to use index in select statement? - Stack Overflow
Jul 6, 2011 · Lets say in the employee table, I have created an index(idx_name) on the emp_name column of the table. Do I need to explicitly specify the index name in select clause …
sql server - Multiple Indexes vs Multi-Column Indexes - Stack …
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 …
sql server - What columns generally make good indexes? - Stack …
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? …
How do I add indexes to MySQL tables? - Stack Overflow
ALTER TABLE `tbl_student` ADD FULLTEXT student_fulltext_index (`student_id`) Above statement will create the Fulltext index name with student_fulltext_index, for which you need …