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SELECT id FROM users WHERE tags REGEXP "(^|\,| )#biomechanical($|\,)" ORDER BY username ASC
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SELECT id FROM users WHERE active=1 AND (username LIKE "%#biomechanical%" OR fullname LIKE "%#biomechanical%" OR position LIKE "%#biomechanical%") ORDER BY username ASC
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SELECT id FROM users WHERE active=1 AND (username="#biomechanical" OR fullname="#biomechanical" OR position="#biomechanical") ORDER BY username ASC