oracle截取字段以及去除汉字

//截取字符串：
substr(org.org_name,0,instr(org.org_name,‘钻探’,1,1)-1) as branch_comp_name

//去除汉字：
translate(org1.org_name,’#’|| translate(org1.org_name,‘abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789’,’#’) ,’/’) as wellitem_name