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