编写一个PL/SQL程序块，从emp表中对名字以"A"或"S"开始的全部雇员按他们基本薪水的10%给他们加薪。

declare cursor s2 is select * from emp where (ename like'A%' or ename like 'S%'); v_res emp%rowtype;  begin    open s2;    fetch s2 into v_res;    loop     exit when s2% notfound;     update emp set s

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