liquibase会在后续更新中更改排序更改吗？

Question

liqibase中的CHANGESET执行是否依赖于它在xml中的位置？例如，如果我有一个如下所示的liquibase脚本

<changeSet id="20140211_001" author="test">
    <createTable tableName="alarm_notification_archive">
        <column name="id" type="bigint">
            <constraints nullable="false" />
        </column>

        <column name="event_timestamp" type="timestamp" defaultValue="0000-00-00 00:00:00">
            <constraints nullable="false" />
        </column>
    </createTable>
</changeSet>

<changeSet id="20140210_001" author="test">
    <sql>ALTER TABLE `notification_archive` ADD COLUMN
        `is_Alarm_Outstanding` BOOLEAN DEFAULT FALSE</sql>
    <rollback>
        <sql>ALTER TABLE notification_archive DROP COLUMN
            is_Alarm_Outstanding
                </sql>
    </rollback>
</changeSet>

我的理解是changeset排序是：

1. 20140211_001
2. 20140210_001

如果我现在在1和2之间添加另一个变更集

<changeSet id="20140211_001" author="test">
    <createTable tableName="alarm_notification_archive">
        <column name="id" type="bigint">
            <constraints nullable="false" />
        </column>

        <column name="event_timestamp" type="timestamp" defaultValue="0000-00-00 00:00:00">
            <constraints nullable="false" />
        </column>
    </createTable>
</changeSet>

<changeSet id="20140212_001" author="test">
    <sql>ALTER TABLE `notification_archive` ADD COLUMN
        `is_Alarm_Outstanding` BOOLEAN DEFAULT FALSE</sql>
    <rollback>
        <sql>ALTER TABLE alarm_notification_archive DROP COLUMN
            is_Alarm_Outstanding
            </sql>
    </rollback>
</changeSet>

<changeSet id="20140210_001" author="test">
    <sql>ALTER TABLE `notification_archive` ADD COLUMN
        `is_Alarm_Outstanding` BOOLEAN DEFAULT FALSE</sql>
    <rollback>
        <sql>ALTER TABLE alarm_notification_archive DROP COLUMN
            is_Alarm_Outstanding
            </sql>
    </rollback>
</changeSet>

新的变更集执行顺序是

1. 20140211_001
2. 20140212_001
3. 20140210_001

Answer 1

是的，Liquibase按顺序读取changeSet。请参阅Changeset Documentation

Answer 2

更明确的是，Liquibase通过文件中的顺序执行变更集。

正如here所述，ID内容对执行顺序没有任何影响：

  

id标记仅用作标识符，不指示订单   改变是运行的，甚至不必是整数。