testing

131.migraterevisionquery.php
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			<?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";