schedule update flushing

The schedule update was consistently timing out every time the csv update was done. Checked with Plesk DBWebadmin (phpmyadmin) and found records from 2008 onwards. Blundering about the interface, found a "Search" - tried 2008, it gave

Search results for "2008" (at least one of the words):

336232 match(es) inside table radiosai_stream_daily  Browse  Delete

Blundering, because I chose delete, and it did

SQL-query: 
DELETE FROM `radiosai`.`radiosai_stream_daily` WHERE `streamId` LIKE '%2008%' 
OR `fileId` LIKE '%2008%' OR `groupId` LIKE '%2008%' 
OR `gmtDatetime` LIKE '%2008%' OR `newflag` LIKE '%2008%'

At least now I know what to give as the proper SQL statement - something like

DELETE FROM `radiosai`.`radiosai_stream_daily` WHERE `gmtDatetime` LIKE '%2009-01%'