INSERT IGNORE INTO `player_skills`
SELECT `id` , 0, 10, 0
FROM `players`
UNION SELECT `id` , 1, 10, 0
FROM `players`
UNION SELECT `id` , 2, 10, 0
FROM `players`
UNION SELECT `id` , 3, 10, 0
FROM `players`
UNION SELECT `id` , 4, 10, 0
FROM `players`
UNION SELECT `id` , 5, 10, 0
FROM `players`...