如何在Oracle PL / SQL中选择INTO数组？

Question

我正在尝试在数组中保存一组ID：

declare
 cities_ids array_of_numbers;
begin
select id into cities_ids from objects where id = 1115464;
    FOR i IN 1..cities_ids.COUNT LOOP
        DBMS_OUTPUT.PUT_LINE(cities_ids(i));
    END LOOP;
end;

执行后，我收到了下一个错误：

ORA-00932: inconsistent datatypes. Expected UDT, got NUMBER.

请解释我做错了什么......

Answer 1

非常简单：BULK COLLECT缺失。

declare
 cities_ids arrayofnumbers;
begin
select object_id BULK COLLECT into cities_ids from nc_objects where object_id = 1000;
    FOR i IN 1..cities_ids.COUNT LOOP
        DBMS_OUTPUT.PUT_LINE(cities_ids(i));
    END LOOP;
end;