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update book set bookname='sssss' where bookId=1;
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declare
v_bookId number;
begin
v_bookId :=1;
update book set bookname='sssss' where bookId=v_bookId;
end;
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declare
v_bookId book.bookId%type;
v_bookname book.bookname%type;
v_table book%rowtype;
begin
select * into v_table from book where bookId=1;
Dbms_Output.put_line('v_table.bookId '|| v_table.bookId || ' v_table.bookName ' || v_table.bookName);
select bookId,bookName into v_bookId,v_bookname from book where bookId=1;
Dbms_Output.put_line('v_bookId '|| v_bookId || ' v_bookname ' || v_bookname);
end;
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