摘要： 1 declare 2 3 str_mid varchar2(100); 4 str_end varchar2(100); 5 begin 6 7 for j in (select t.id,t.ques_desc from cqdn_qa_list_tmp t) 8 loop 9 for i in 1 .. length(j.ques_desc) 10 lo... 阅读全文