Paolo Cravero as2594 wrote:
Cami wrote:
Keep far far away from these queries, they are slow.
But probably keep data consistent...
They do the same thing really.
DELETE FROM quarantine WHERE time_num < UNIX_TIMESTAMP() - 7*24*60*60;
(make sure you have an index on time_num)
From http://www.ijs.si/software/amavisd/README.sql.txt :
CREATE TABLE quarantine (
mail_id varchar(12) NOT NULL, -- long-term unique mail id
chunk_ind integer unsigned NOT NULL, -- chunk number, starting with 1
mail_text text NOT NULL, -- store mail as chunks up to 16 kB
PRIMARY KEY (mail_id,chunk_ind),
FOREIGN KEY (mail_id) REFERENCES msgs(mail_id) ON DELETE CASCADE
) ENGINE=InnoDB;
I don't see any "time_num" column there. How can that work for you?
I am using a (slightly) patched version of amavisd-new.
I'm assuming that Mark has benchmarked the difference in
speed between the time_num index approach vs the DELETE
CASCADE approach and found it to be quicker.
Mark, can you confirm what your findings were?
Cami
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