<?xml version="1.0" encoding="UTF-8"?>
<databaseChangeLog
        xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext"
        xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.0.xsd
        http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd">
    <changeSet id="1" author="bshah">
        <sql dbms="mysql" endDelimiter=";;" splitStatements="true" stripComments="true">
		<![CDATA[
            CREATE TABLE `ROLLBACK-track_writer`
				SELECT track_writer_id, writer_name FROM track_writer
					WHERE writer_name LIKE ',%';;
			
			UPDATE track_writer
				SET writer_name = TRIM(LEADING ',' FROM writer_name)
					WHERE writer_name LIKE ',%';;
		]]>			
        </sql>
        <rollback>
			<![CDATA[
            UPDATE track_writer tw 
				INNER JOIN `ROLLBACK-track_writer` rtw ON rtw.track_writer_id = tw.track_writer_id
					SET tw.writer_name = rtw.writer_name;;
			]]>		
        </rollback>
    </changeSet>
</databaseChangeLog>
