oracle删除字段中的空格、回车及指定字符

create or replace procedure PROC_test is  --Description:删除字段中的指定字符(回车chr（13）、换行chr（10）)  --By LiChao  --Date:2016-03-01  colname varchar(20); --列名  cnt     number; --包含换行符的列的行数  v_sql   varchar(2000); --动态SQL变量begin  --读取表中的列  for col in (select column_name                from user_tab_columns               where table_name = 'TEMP') loop    colname := col.column_name;   --替换换行符chr(10)    v_sql := 'select count(1)  from temp  where instr(' || colname ||             ',chr(10))>0 ';    EXECUTE IMMEDIATE V_SQL      into cnt;    if cnt > 0 then      v_sql := 'update temp set ' || colname || '=trim(replace(' || colname ||               ',chr(10),''''))' || 'where instr(' || colname ||               ',chr(10))>0 ';      EXECUTE IMMEDIATE V_SQL;      commit;    end if;   --替换回车符chr(13)    v_sql := 'select count(1)  from temp  where instr(' || colname ||             ',chr(13))>0 ';    EXECUTE IMMEDIATE V_SQL      into cnt;    if cnt > 0 then      v_sql := 'update temp set ' || colname || '=trim(replace(' || colname ||               ',chr(13),''''))' || 'where instr(' || colname ||               ',chr(13))>0  ';      EXECUTE IMMEDIATE V_SQL;      commit;        end if;    --替换'|' chr(124) 为'*' chr（42）    v_sql := 'select count(1)  from temp  where instr(' || colname ||             ',chr(124))>0 ';    EXECUTE IMMEDIATE V_SQL      into cnt;    if cnt > 0 then      v_sql := 'update temp set ' || colname || '=replace(' || colname ||               ',chr(124),chr(42))' || 'where instr(' || colname ||               ',chr(124))>0  ';      EXECUTE IMMEDIATE V_SQL;      commit;        end if;  end loop;end PROC_test;/