phabricator/resources/sql/patches/131.migraterevisionquery.php

<?php

$table = new DifferentialRevision();
$table->openTransaction();
$table->beginReadLocking();
$conn_w = $table->establishConnection('w');

echo 'Migrating revisions';
do {
  $revisions = $table->loadAllWhere('branchName IS NULL LIMIT 1000');

  foreach ($revisions as $revision) {
    echo '.';

    $diff = $revision->loadActiveDiff();
    if (!$diff) {
      continue;
    }

    $branch_name = $diff->getBranch();
    $arc_project_phid = $diff->getArcanistProjectPHID();

    queryfx(
      $conn_w,
      'UPDATE %T SET branchName = %s, arcanistProjectPHID = %s WHERE id = %d',
      $table->getTableName(),
      $branch_name,
      $arc_project_phid,
      $revision->getID());
  }
} while (count($revisions) == 1000);

$table->endReadLocking();
$table->saveTransaction();
echo "\nDone.\n";