dropPrimaryKey

The dropPrimaryKey Change Type drops an existing primary key in the table.

Uses

You can typically use the dropPrimaryKey Change Type when you want to remove a field that uniquely defines a record in your database. It can include tableName and other attributes listed in this documentation.

Running the dropPrimaryKey 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

Now, you should see that the information indicating your primary key is removed from the table.

Available attributes

Name

Description

Required for

Supports

Since

catalogName

Name of the catalog

all

constraintName

Name of the constraint (primary key) to drop

firebird, informix, sybase

all except bigquery

dropIndex

Boolean: whether to drop the index associated with the primary key.

all

schemaName

Name of the schema

all

tableName

Name of the table from which you drop the primary key.

all

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

Supported

No

SQL Server

Supported

No

SQLite

Not Supported

No

Sybase

Supported

No

Sybase Anywhere

Supported

No

dropPrimaryKey examples

--liquibase formatted sql
--changeset liquibase-docs:dropPrimaryKey-example
ALTER TABLE department.person
DROP PRIMARY KEY;

dropPrimaryKey - Liquibase