dropDefaultValue

Removes the database default value for a column.

Available attributes

Name Description Required for Supports Since
catalogName

Name of the catalog

all 3.0
columnDataType

Data type of the column.

To help make scripts database-independent, Liquibase automatically converts the following generic data types to the correct database implementation: BIGINT, BLOB, BOOLEAN, CHAR, CLOB, CURRENCY, DATE, DATETIME, DECIMAL, DOUBLE, FLOAT, INT, MEDIUMINT, NCHAR, NUMBER, NVARCHAR, SMALLINT, TIME, TIMESTAMP, TINYINT, UUID, VARCHAR, XML.

Also, specifying a java.sql.Types.* type is converted to the correct type as well. For example:

  • java.sql.Types.TIMESTAMP
  • java.sql.Types.VARCHAR(255)
informix all
columnName Name of the column to drop the default value from all all
schemaName

Name of the schema

all
tableName Name of the table containing the column to drop the default value from all all

Examples

<databaseChangeLog
    xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext"
    xmlns:pro="http://www.liquibase.org/xml/ns/pro"
    xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
        http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-latest.xsd
        http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd
        http://www.liquibase.org/xml/ns/pro http://www.liquibase.org/xml/ns/pro/liquibase-pro-latest.xsd">

    <changeSet  author="liquibase-docs"  id="dropDefaultValue-example">
        <dropDefaultValue  catalogName="cat"
            columnDataType="int"
            columnName="id"
            schemaName="public"
            tableName="person"/>
    </changeSet>

</databaseChangeLog>
databaseChangeLog:
-  changeSet:
    id:  dropDefaultValue-example
    author:  liquibase-docs
    changes:
    -  dropDefaultValue:
        catalogName:  cat
        columnDataType:  int
        columnName:  id
        schemaName:  public
        tableName:  person
{
    "databaseChangeLog": [
        {
            "changeSet": {
                "id": "dropDefaultValue-example",
                "author": "liquibase-docs",
                "changes": [
                    {
                        "dropDefaultValue": {
                            "catalogName": "cat",
                            "columnDataType": "int",
                            "columnName": "id",
                            "schemaName": "public",
                            "tableName": "person"
                        }
                    }
                ]
            }
        }
    ]
}
--liquibase formatted sql

--changeset liquibase-docs:dropDefaultValue-example
ALTER  TABLE  cat.person  ALTER  id  DROP  DEFAULT;

Database support

Database Notes Auto Rollback
DB2/LUW Supported No
DB2/z Supported No
Derby Supported No
Firebird 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