dropForeignKeyConstraint

Drops an existing foreign key.

Run dropForeignKeyConstraint

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:
    4. liquibase update

Available attributes

Name Description Required for Supports Since
baseTableCatalogName Name of the catalog of the base table all 3.0
baseTableName Name of the table containing the column constrained by the foreign key all all
baseTableSchemaName Name of the schema of the base table all
constraintName Name of the constraint (foreign key) to drop all all

Examples

--liquibase formatted sql

--changeset liquibase-docs:dropForeignKeyConstraint-example
ALTER  TABLE  cat.person  DROP  FOREIGN  KEY  fk_address_person;
databaseChangeLog:
-  changeSet:
    id:  dropForeignKeyConstraint-example
    author:  liquibase-docs
    changes:
    -  dropForeignKeyConstraint:
        baseTableCatalogName:  cat
        baseTableName:  person
        baseTableSchemaName:  public
        constraintName:  fk_address_person
{
    "databaseChangeLog": [
        {
            "changeSet": {
                "id": "dropForeignKeyConstraint-example",
                "author": "liquibase-docs",
                "changes": [
                    {
                        "dropForeignKeyConstraint": {
                            "baseTableCatalogName": "cat",
                            "baseTableName": "person",
                            "baseTableSchemaName": "public",
                            "constraintName": "fk_address_person"
                        }
                    }
                ]
            }
        }
    ]
}
<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="dropForeignKeyConstraint-example">
        <dropForeignKeyConstraint  baseTableCatalogName="cat"
            baseTableName="person"
            baseTableSchemaName="public"
            constraintName="fk_address_person"/>
    </changeSet>

</databaseChangeLog>

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