Add CREATED_AT and CREATED_BY columns.

Author: cssru

src/main/resources/liquibase/version/0.4/2016-09-28--add_creator_data_to_series_sales.xml

@@ -20,7 +20,7 @@
 		<update tableName="series_sales">
 			<column name="created_by"
 				type="INTEGER"
-				valueComputed="SELECT u.id FROM users u WHERE u.role = 'ADMIN' LIMIT 1" />
+				valueComputed="(SELECT u.id FROM users u WHERE u.role = 'ADMIN' LIMIT 1)" />
 		</update>
 
 		<addNotNullConstraint columnName="created_at" columnDataType="DATETIME" tableName="series_sales" />