Liquibase的Oracle 19c默认值

<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                   xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
                                       http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.8.xsd">
    <changeSet author="your_name" id="create_table">
        <createTable tableName="my_table">
            <column name="id" type="INT">
                <constraints primaryKey="true" nullable="false"/>
            </column>
            <column name="name" type="VARCHAR(50)" defaultValue="John Doe"/>
            <column name="age" type="INT" defaultValueNumeric="18"/>
        </createTable>
    </changeSet>
</databaseChangeLog>