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CREATE TABLE history_log_tmp (
id bigint unsigned DEFAULT '0' NOT NULL,
itemid bigint unsigned DEFAULT '0' NOT NULL,
clock integer DEFAULT '0' NOT NULL,
timestamp integer DEFAULT '0' NOT NULL,
source varchar(64) DEFAULT '' NOT NULL,
severity integer DEFAULT '0' NOT NULL,
value text DEFAULT '' NOT NULL,
PRIMARY KEY (id)
) ENGINE=InnoDB;
CREATE INDEX history_log_1 on history_log_tmp (itemid,clock);
insert into history_log_tmp select * from history_log;
drop table history_log;
alter table history_log_tmp rename history_log;
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