I have millions of queries without indexes, and wanted to know what are they doing and if it's possible to disable a function to stop them, these are some examples:
SELECT `phrase_key` FROM `wp_wc_phrases` WHERE `phrase_key` LIKE 'wc_be_the_first_text'; # Query_time: 0.000205 Lock_time: 0.000039 Rows_sent: 101 Rows_examined: 101 SET timestamp=1490659590; SELECT `phrase_key`, `phrase_value` FROM `wp_wc_phrases`;
# Time: 170328 0:06:31 # Query_time: 0.000411 Lock_time: 0.000152 Rows_sent: 1 Rows_examined: 101 SET timestamp=1490659591; SELECT `phrase_key` FROM `wp_wc_phrases` WHERE `phrase_key` LIKE 'wc_be_the_first_text'; # Query_time: 0.000162 Lock_time: 0.000038 Rows_sent: 101 Rows_examined: 101 SET timestamp=1490659591; SELECT `phrase_key`, `phrase_value` FROM `wp_wc_phrases`; # Query_time: 0.000558 Lock_time: 0.000198 Rows_sent: 0 Rows_examined: 0
I don't think they are millions. Each comment form has it's own a few phrases and it gets from DB. wpDiscuz phrases are stored in DB and it loads them before showing the form.
You can try use PO/MO files instead of phrase system by enabling according option in Dashboard > Comments > Settings admin page.
I logged it for about 5 minutes and there were a thousand.
I disabled it, i hope it stops those queries.
Not good for busy sites.
Do you have thousands of visitors per sec? This is the only way to get so many queries. Have you turned on the PO/MO file usage mentioned above?