如何在 Oracle PL/SQL 中選擇 INTO 數字數組？

Question

我正在嘗試將一組 id 保存在數組中：

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;

執行后，我得到了下一個錯誤：

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

請解釋我做錯了什么...

Answer 1

很簡單：缺少BULK COLLECT 。

declare
 cities_ids array_of_numbers;
begin
select id BULK COLLECT 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;