dropIndex

The dropIndex Change Type drops an existing index on a column.

Uses

You can typically use the dropIndex Change Type when you want to remove the specific index that identifies records in your database.

Once an index has been dropped, all metadata is removed. The index can’t be rebuilt and you must create it again. Also, if you drop a clustered index, the table will lose its identifiers.

Running the dropIndex Change Type

To run this Change Type, follow these steps:

  1. Add the Change Type to your changeset, as shown in the examples on this page.

  2. Specify any required attributes. Use the table on this page to see which ones your database requires.

  3. Deploy your changeset by running the update command:liquibase update

Available attributes

Name

Description

Required for

Supports

Since

catalogName

Name of the catalog

all

3.0

indexName

Name of the index

all

all

schemaName

Name of the schema

all

tableName

Name of the table that is indexed

asany, mariadb, mssql, mysql, sybase

all

Database support

Database

Notes

Auto Rollback

DB2/LUW

Supported

No

DB2/z

Supported

No

Derby

Supported

No

Firebird

Supported

No

Google BigQuery

Supported

No

H2

Supported

No

HyperSQL

Supported

No

INGRES

Supported

No

Informix

Supported

No

MariaDB

Supported

No

MySQL

Supported

No

Oracle

Supported

No

PostgreSQL

Supported

No

Snowflake

Not Supported

No

SQL Server

Supported

No

SQLite

Supported

No

Sybase

Supported

No

Sybase Anywhere

Supported

No

dropIndex examples

--liquibase formatted sql
--changeset liquibase-docs:dropIndex-example
DROP INDEX idx_address ON public.person;