<?xml version="1.0" encoding="UTF-8"?>
<changelog xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="file:/var/app/InputFileSchema.xsd">
    <changeset id="DS-3644-add-created_at-prop-to-all-participated_in-track-relations:1" author="ibolshakov" run-on-change="true">
        <cypherquery>
          <![CDATA[
            CALL apoc.periodic.iterate(
              'MATCH (:Track:Orchard)-[r:PARTICIPATED_IN]-(:LabelParticipant:Orchard) WHERE r.createdAt IS NULL RETURN r',
              'SET r.createdAt = datetime({year: 1970, month: 1, day: 1})',
              {batchSize:30, iterateList:true, parallel:true, concurrency:5}
            ) 
            YIELD batches
            RETURN NULL
          ]]>
        </cypherquery>
    </changeset>
</changelog>
