Liquibase
suggests each ChangeSet
should have a single DML
or DDL
query. Each ChangeSet
changes the state of the database
, some times requirement is to update the database
up to a certain point or tag
only. Liquibase
provides updateToTag
command, that will only execute the update from the start of the ChangeSet
to the tag ChangeSet
.
Each ChangeSet
should be followed by a tagDatabase Changeset. Liquibase
will execute up to the tag
passed-in argument only.
<?xml version="1.1" encoding="UTF-8" standalone="no"?>
<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog" xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext" xmlns:pro="http://www.liquibase.org/xml/ns/pro" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="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 http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-latest.xsd">
<changeSet author="wesome" id="1692701200879-1">
<createTable catalogName="appledb" tableName="apple">
<column autoIncrement="true" name="apple_id" type="BIGINT">
<constraints nullable="false" primaryKey="true" />
</column>
<column name="apple_name" type="VARCHAR(255)" />
<column defaultValueComputed="CURRENT_TIMESTAMP" name="current_date_time" type="datetime" />
</createTable>
</changeSet>
<changeSet author="wesome" id="1692701200879-2">
<tagDatabase tag="version1" />
</changeSet>
<changeSet author="wesome" id="1692701200879-3">
<insert catalogName="appledb" tableName="apple">
<column name="apple_name" value="Macintosh" />
<column name="current_date_time" valueDate="now()" />
</insert>
</changeSet>
<changeSet author="wesome" id="first row inserted">
<tagDatabase tag="version2" />
</changeSet>
<changeSet author="wesome" id="1692701200879-4">
<insert catalogName="appledb" tableName="apple">
<column name="apple_name" value="Fuji" />
<column name="current_date_time" valueDate="now()" />
</insert>
</changeSet>
<changeSet author="wesome" id="2nd row inserted">
<tagDatabase tag="version3" />
</changeSet>
<changeSet author="wesome" id="1692701200879-5">
<insert catalogName="appledb" tableName="apple">
<column name="apple_name" value="Gala" />
<column name="current_date_time" valueDate="now()" />
</insert>
</changeSet>
<changeSet author="wesome" id="3rd row inserted">
<tagDatabase tag="version4" />
</changeSet>
</databaseChangeLog>
liquibase.properties (update changeLog File file format with SQL, XML, YAML, JSON as per changelog.mysql.)
changeLogFile=changelog.mysql.xml
liquibase.command.url:jdbc:mysql://localhost:3306/appleDb?createDatabaseIfNotExist=true&autoReconnect=true&useSSL=false&allowPublicKeyRetrieval=true
liquibase.command.username : root
liquibase.command.password : rootroot
Run command liquibase updateToTag --tag=version1
Liquibase
will only execute till the tag
passed in arugment, in this case --tag=version1
, the same can be verified by running the query
SELECT * FROM appleDb.apple;