1.
-- 定義游標
cursor c_student is
select id, first_name, last_name, major from t_test_students;
-- 遍歷游標
open c_student;
loop
fetch c_student
into v_newid, v_newfirstname, v_newlastname, v_newmajor;
exit when c_student%notfound;
insert into t_test_students
(id, first_name, last_name, major)
values
(v_newid, v_newfirstname, v_newlastname, v_newmajor);
end loop;
close c_student;
commit; 2.
-- 定義游標
cursor c_student is
select id, first_name, last_name, major from t_test_students;
-- 遍歷游標
fetch c_student into v_newid, v_newfirstname, v_newlastname, v_newmajor;
while c_student%found loop
insert into t_test_students
(id, first_name, last_name, major)
values
(v_newid, v_newfirstname, v_newlastname, v_newmajor);
fetch c_student into v_newid, v_newfirstname, v_newlastname, v_newmajor;
end loop;
close c_student;
commit; 3.
cursor c_student is
select id, first_name, last_name, major from t_test_students;
for v_student in c_student loop
insert into t_test_students
(id, first_name, last_name, major)
values
(v_student.id, v_student.first_name, v_student.last_name, v_student.major);
end loop;
commit; 4.
/* 不需要定義游標
cursor c_student is
select id, first_name, last_name, major from t_test_students; */
for v_student in (select id, first_name, last_name, major from t_test_students) loop
insert into t_test_students
(id, first_name, last_name, major)
values
(v_student.id, v_student.first_name, v_student.last_name, v_student.major);
end loop;
commit;
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