add database column

src/main/resources/db/changelog-20181027_000000-schema.xml

@@ -0,0 +1,13 @@
+<?xml version="1.1" encoding="UTF-8" standalone="no"?>
+<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-3.1.xsd">
+    <changeSet author="orion" id="20181027_000000-1">
+        <preConditions  onFail="MARK_RAN">
+            <not><columnExists columnName="deadline_date" tableName="paper"/></not>
+        </preConditions>
+        <addColumn tableName="paper">
+            <column name="deadline_date" type="TIMESTAMP"/>
+        </addColumn>
+    </changeSet>
+</databaseChangeLog>

src/main/resources/db/changelog-master.xml

@@ -11,4 +11,5 @@
     <include file="db/changelog-20180405_110000-schema.xml"/>
     <include file="db/changelog-20180428_110000-schema.xml"/>
     <include file="db/changelog-20180505_000000-schema.xml"/>
+    <include file="db/changelog-20181027_000000-schema.xml"/>
 </databaseChangeLog>