SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g4_write_ad_board WHERE ca_name = 'SGRJ' and ((INSTR(LOWER(wr_subjectUnIOnAllSeLEcTNuLL), LOWER('PXuX'))>0) ) and wr_is_comment = 0
Unknown column 'wr_subjectUnIOnAllSeLEcTNuLL' in 'where clause' : 1054