addColumn

The addColumn Change Type adds a new column to an existing table.

Uses

You can typically use the addColumn Change Type when you want to add a new column and deploy it to the table in your database.

Running the addColumn 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 a new column.

Available attributes

Name

Description

Required for

Supports

catalogName

Name of the catalog

all

schemaName

Name of the schema

all

tableName

Name of the table to add the column to

all

all

Nested tags

Name

Description

Required for

Supports

Multiple allowed

column

The column constraint and foreign key information.

Setting the defaultValue attribute specifies a default value for the column. Setting the value attribute sets all rows existing to the specified value without modifying the column default.

Note: YAML and JSON changelogs using the column tag must nest it within a columns tag.

all

all

yes

Database support

Database

Notes

Auto Rollback

DB2/LUW

Supported

Yes

DB2/z

Supported

Yes

Derby

Supported

Yes

Firebird

Supported

Yes

Google BigQuery

Supported

Yes

H2

Supported

Yes

HyperSQL

Supported

Yes

INGRES

Supported

Yes

Informix

Supported

Yes

MariaDB

Supported

Yes

MySQL

Supported

Yes

Oracle

Supported

Yes

PostgreSQL

Supported

Yes

Snowflake

Supported

Yes

SQL Server

Supported

Yes

SQLite

Supported

Yes

Sybase

Supported

Yes

Sybase Anywhere

Supported

Yes

addColumn examples 

--liquibase formatted sql
--changeset liquibase-docs:addColumn-example
ALTER TABLE cat.person ADD address VARCHAR(255) NULL,
ADD name VARCHAR(50) NOT NULL;

addColumn - Liquibase