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Example of writing a MariaDB query to generate 100k records
-- See more at
INSERT INTO T1 (id, created_on, domain, seen_on)
SELECT one.X, two.X, three.X, two.X
FROM (select seq, seq X from seq_1_to_100000) one
LEFT JOIN (select seq, NOW() - INTERVAL seq MINUTE X from seq_1_to_100000) two ON one.seq = two.seq
LEFT JOIN (select seq, CONCAT(seq,'.',seq) X from seq_1_to_100000) three ON one.seq = three.seq;
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