How to optimize a delete query with a subselect?
This query needs to delete over 17 million rows, from a table containing 20 million.
DELETE FROM statements where agreement_id IN (select id FROM agreements WHERE created < DATE_SUB(CURDATE(), INTERVAL 6 MONTH));
DELETE FROM agreements WHERE created < DATE_SUB(CURDATE(), INTERVAL 6 MONTH)
It takes hours to run, am I missing something that could speed things up a bit?
The subselect by itself takes a few seconds, I don't understand why the delete takes so long.
mysql mysql-5.7
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This query needs to delete over 17 million rows, from a table containing 20 million.
DELETE FROM statements where agreement_id IN (select id FROM agreements WHERE created < DATE_SUB(CURDATE(), INTERVAL 6 MONTH));
DELETE FROM agreements WHERE created < DATE_SUB(CURDATE(), INTERVAL 6 MONTH)
It takes hours to run, am I missing something that could speed things up a bit?
The subselect by itself takes a few seconds, I don't understand why the delete takes so long.
mysql mysql-5.7
New contributor
add a comment |
This query needs to delete over 17 million rows, from a table containing 20 million.
DELETE FROM statements where agreement_id IN (select id FROM agreements WHERE created < DATE_SUB(CURDATE(), INTERVAL 6 MONTH));
DELETE FROM agreements WHERE created < DATE_SUB(CURDATE(), INTERVAL 6 MONTH)
It takes hours to run, am I missing something that could speed things up a bit?
The subselect by itself takes a few seconds, I don't understand why the delete takes so long.
mysql mysql-5.7
New contributor
This query needs to delete over 17 million rows, from a table containing 20 million.
DELETE FROM statements where agreement_id IN (select id FROM agreements WHERE created < DATE_SUB(CURDATE(), INTERVAL 6 MONTH));
DELETE FROM agreements WHERE created < DATE_SUB(CURDATE(), INTERVAL 6 MONTH)
It takes hours to run, am I missing something that could speed things up a bit?
The subselect by itself takes a few seconds, I don't understand why the delete takes so long.
mysql mysql-5.7
mysql mysql-5.7
New contributor
New contributor
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asked 2 mins ago
stefgosselinstefgosselin
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stefgosselin is a new contributor. Be nice, and check out our Code of Conduct.
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