clob okuma

1 declare
2 t clob;
3 my_vr varchar2(200);
4 i1 number;
5 begin
6 i1 := 200;
7 select text into t from doc_table where rowid='AAAWsCAAJAAA/AaAAC';
8 dbms_lob.read(t,i1,1,my_vr);
9 dbms_output.put_line(my_vr);
10* end;
Surface treatment for improved hardness and corrosion resistance - Patent
6497772

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