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select wr_id, wr_subject from g4_write_61 where wr_is_comment = 0 and wr_num = '-13' and wr_reply < '' and ((INSTR(LOWER(mb_id%2C1), LOWER('admin'))) ) order by wr_num desc, wr_reply desc limit 1

1054 : Unknown column '2C1' in 'where clause'

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