Index: Improve the query performance when flagging hidden files

[jerome-cui]

I noticed that there is a SQL query causes the CPU to 100% usage all the time, below is the information I found in db slow log:

# Time: 221120 17:13:36
# User@Host: photoprism[photoprism] @  [172.24.0.2]
# Thread_id: 392  Schema: photoprism  QC_hit: No
# Query_time: 6288.676700  Lock_time: 0.000035  Rows_sent: 0  Rows_examined: 1836237798
# Rows_affected: 0  Bytes_sent: 0
SET timestamp=1668935616;
UPDATE `photos` SET `photo_quality` = -1  WHERE (id NOT IN (SELECT photo_id FROM files WHERE file_primary = 1 AND file_missing = 0 AND file_error = '' AND deleted_at IS NULL));

This maybe the issue of Mariadb because it works with this query "select count(*) from photos WHERE (id NOT IN (SELECT photo_id FROM files WHERE file_primary = 1 AND file_missing = 0 AND file_error = '' AND deleted_at IS NULL))", but how could I avoid this issue in Photoprism?

Database: Mariadb 10.9.3.
Row count of table 'photos': 86789.

[lastzero]

You can suggest a different query that does the same.

[jerome-cui]

It happens after I migrated the database from DB in docker to DB in host. It has no problem for db in docker so I tried to re-import the database again and seems it works now.
Sorry for this report and I will close it.

[lastzero]

I have already changed the queries. It would be great if you could test it when a new development preview is available later today!

[lastzero]

Any update on this?