DB ERROR Mysql_Query : select * from morning_goods_table where goods_class = '0' and approval_date > '0' and ( substring(goods_category,1,4) = '0103' or substring(goods_mcategory1,1,4) = '0103' or substring(goods_mcategory2,1,4) = '0103' or substring(goods_mcategory3,1,4) = '0103' or substring(goods_mcategory4,1,4) = '0103' or substring(goods_mcategory5,1,4) = '0103' ) order by goods_rank asc limit 640, 40 Mysql_Error : Query execution was interrupted Mysql Error Num : 1317