diff options
Diffstat (limited to 'application/migrations/015_actually_deduplicate_file_storage.php')
| -rw-r--r-- | application/migrations/015_actually_deduplicate_file_storage.php | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/application/migrations/015_actually_deduplicate_file_storage.php b/application/migrations/015_actually_deduplicate_file_storage.php index 267afc1fe..76ff2d6b9 100644 --- a/application/migrations/015_actually_deduplicate_file_storage.php +++ b/application/migrations/015_actually_deduplicate_file_storage.php @@ -12,18 +12,14 @@ class Migration_actually_deduplicate_file_storage extends CI_Migration { } else { // XXX: This query also exists in migration 14 $this->db->query(' - DELETE `'.$prefix.'file_storage` - FROM `'.$prefix.'file_storage` - LEFT OUTER JOIN `'.$prefix.'files` ON `'.$prefix.'files`.file_storage_id = `'.$prefix.'file_storage`.id - WHERE `'.$prefix.'file_storage`.id NOT IN ( - SELECT min(x.id) - FROM ( - SELECT fs.id, fs.hash - FROM `'.$prefix.'file_storage` fs - ) x - GROUP BY x.hash - ) - AND `'.$prefix.'files`.id IS NULL + DELETE fs + FROM `'.$prefix.'file_storage` fs, `'.$prefix.'file_storage` fs2 + WHERE fs.hash = fs2.hash + AND fs.id > fs2.id + AND fs.id NOT IN ( + SELECT file_storage_id + FROM `'.$prefix.'files` f + ); '); } |