SELECT id FROM users WHERE active=1 AND about_me LIKE "%#информатика%" ORDER BY username ASC, num_followers DESC
0.00908
SELECT id FROM users WHERE tags REGEXP "(^|\,| )#информатика($|\,)" ORDER BY username ASC
0.01270
SELECT id FROM users WHERE active=1 AND (username LIKE "%#информатика%" OR fullname LIKE "%#информатика%" OR position LIKE "%#информатика%") ORDER BY username ASC
0.01100
SELECT id FROM users WHERE active=1 AND (username="#информатика" OR fullname="#информатика" OR position="#информатика") ORDER BY username ASC