I have this portion of XML Liquibase script, to creates some columns in a table:
<column name="send_time" type="timestamp">
<constraints nullable="false"/>
</column>
<column name="delivery_time" type="timestamp">
<constraints nullable="false"/>
</column>
<column name="read_time" type="timestamp">
<constraints nullable="false"/>
</column>
<column name="payload" type="json">
<constraints nullable="true"/>
</column>
<column name="created_date" type="timestamp">
<constraints nullable="false"/>
</column>
<column name="created_by" type="varchar(50)">
<constraints nullable="false"/>
</column>
<column name="last_modified_date" type="timestamp"/>
<column name="last_modified_by" type="varchar(50)"/>
<column name="deleted_date" type="timestamp"/>
<column name="deleted_by" type="varchar(50)"/>
Could anyone explain why the result is like in the attached image?
In other words, this set to field 'send_time', the Default/Expression.
Why this?