The Data Management Center

SQL DROP INDEX


Google
 
Web infogoal.com
HOME | SQL OVERVIEW | SQL BASICS | SQL ADMINISTRATION | SQL ADVANCED | SQL SYNTAX


SQL Book Picks

SQL Cookbook
SQL Cookbook by Anthony Molinaro


SQL Visual Quick Start
SQL: Visual QuickStart Guide (2nd Edition) by Chris Fehily

SQL Bible
SQL Bible by Alex Kriegel, Boris M. Trukhnov

SQL Complete Reference
SQL: The Complete Reference, Second Edition by James R Groff, Paul N. Weinberg

SQL for Smarties
Joe Celko's SQL for Smarties: Advanced SQL Programming Third Edition by Joe Celko

Murach SQL Server
Murach's SQL for SQL Server by Bryan Syverson

Previous | Next

SQL > SQL Administration > SQL DROP INDEX Statement


What is the SQL DROP INDEX Statement?

The SQL DROP INDEX statement is the SQL command that removes an entire SQL index.

Why Use the SQL DROP INDEX Statement?

You may drop an index permanently when it is no longer useful or temporarily. If the index is harming or not helping performance it could be dropped.

Indexes may slow down the loading of data because they must be maintained during the data load process. For high performance loads, an index could be dropped for the duration of a load and then recreated.

How To Use the SQL DROP INDEX Statement

The SQL DROP INDEX command is used as follows.

SQL DROP INDEX Statement Syntax

 
DROP INDEX <table_name>.<index_name>
 

SQL DROP INDEX Statement Example

The following example drops an index named IDX_PERSON_NAME on a table named PERSON.

 
DROP INDEX PERSON.IDX_PERSON_NAME
 

infogoal.com HOME
SQL OVERVIEW

SQL BASICS
SQL SELECT
SQL WHERE
SQL INSERT
SQL UPDATE
SQL DELETE

SQL ADMINISTRATION
SQL CREATE DATABASE
SQL DROP DATABASE
SQL CREATE TABLE
SQL ALTER TABLE
SQL DROP TABLE
SQL CREATE INDEX
SQL DROP INDEX
SQL ADD FOREIGN KEY
SQL DROP FOREIGN KEY
SQL CREATE VIEW
SQL DROP VIEW

SQL ADVANCED
SQL CONCAT
SQL SUBSTRING
SQL TRIM
SQL AND & OR
SQL IN
SQL BETWEEN
SQL LIKE
SQL DISTINCT
SQL GROUP BY
SQL AGGREGATE
SQL HAVING
SQL ORDER BY
SQL JOIN
SQL OUTER JOIN

SQL SYNTAX

Data Model Resource Book Vol 1
Data Model Resource Book Vol 2
HOME | SQL OVERVIEW | SQL BASICS | SQL ADMINISTRATION | SQL ADVANCED | SQL SYNTAX
Copyright© 1999-2006, First Place Software, Inc.