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phorge-phorge/resources/sql/autopatches/20141106.uniqdrafts.php
epriestley fbc175aa6e Force Differential draft uniqueness
Summary: Ref T1191. A couple of installs have hit issues with this table, so clean it up before adjustment adds a unique key to it.

Test Plan: Dropped key, added duplicate rows, ran patch, got cleanup, ran adjust to get the key back.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T1191

Differential Revision: https://secure.phabricator.com/D10799
2014-11-07 12:30:00 -08:00

30 lines
832 B
PHP

<?php
// Destroy duplicate drafts before storage adjustment adds a unique key to this
// table. See T1191. We retain the newest draft.
// (We can't easily do this in a single SQL statement because MySQL won't let us
// modify a table that's joined in a subquery.)
$table = new DifferentialDraft();
$conn_w = $table->establishConnection('w');
$duplicates = queryfx_all(
$conn_w,
'SELECT DISTINCT u.id id FROM %T u
JOIN %T v
ON u.objectPHID = v.objectPHID
AND u.authorPHID = v.authorPHID
AND u.draftKey = v.draftKey
AND u.id < v.id',
$table->getTableName(),
$table->getTableName());
$duplicates = ipull($duplicates, 'id');
foreach (PhabricatorLiskDAO::chunkSQL($duplicates) as $chunk) {
queryfx(
$conn_w,
'DELETE FROM %T WHERE id IN (%Q)',
$table->getTableName(),
$chunk);
}