Register Login My Class Global College GC Camp Q&A

select distinct wr_parent from g5_write_qa where ((INSTR(LOWER(mb_id2C1), LOWER('gcc'))) ) and (wr_num between -3007 and (-3007 + 10000))

1054 : Unknown column 'mb_id2C1' in 'where clause'

error file : /bbs/board.php