Property definition in the ChangeLog
file is the easiest way of dynamic substitution
. these properties
will be defined at the top of the ChangeLog
file and will be replaced with a placeholder dynamically
at run time.
<?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">
<property name="table.name" value="apple" />
<changeSet author="wesome" id="1692599548266-1">
<preConditions onFail="WARN">
<changeLogPropertyDefined property="table.name" />
</preConditions>
<createTable catalogName="appledb" tableName="${table.name}">
<column autoIncrement="true" name="apple_id" type="BIGINT">
<constraints nullable="false" primaryKey="true" />
</column>
<column name="apple_name" type="VARCHAR(255)" />
<column defaultValueComputed="CURRENT_TIMESTAMP" name="current_date_time" type="datetime" />
</createTable>
</changeSet>
<changeSet author="wesome" id="1697962298531-2">
<insert catalogName="appledb" tableName="${table.name}">
<column name="apple_name" value="Gala" />
<column name="current_date_time" valueDate="now()" />
</insert>
</changeSet>
</databaseChangeLog>
liquibase.properties (update changeLog File file format with SQL, XML, YAML, JSON as per changelog.mysql.)
liquibase.command.url=jdbc:mysql://localhost:3306/appleDb?createDatabaseIfNotExist=true&autoReconnect=true&useSSL=false&allowPublicKeyRetrieval=true
liquibase.command.username= root
liquibase.command.password= rootroot
execute the command
liquibase update