使用SQL类型：

SQL> create type t_id is table of number;

2 /

Type created.

SQL> CREATE OR REPLACE PROCEDURE PROCEDURE1

2 as

3 v_ids t_id;

4 v_user_ids number;

5 BEGIN

6

7 -- fill variable v_id with id's, user_id is of type number

8 select user_id

9 bulk collect into v_ids

10 from user_users

11 where user_id between 100 and 120;

12

13 select user_id into v_user_ids

14 from user_users

15 where user_id in (select /*+ cardinality(t, 10) */ t.column_value from table(v_ids) t)

16 and rownum = 1;

17

18 dbms_output.put_line(v_user_ids);

19

20 END PROCEDURE1;

21 /

Procedure created.

SQL> exec procedure1

100

其中基数(t,10)应该是对数组中有多少元素的合理猜测.

注意：

像你一样使用无限制的批量收集：

8 select user_id

9 bulk collect into v_ids

10 from user_users;

如果你的数组最终会有数千或更多的行,那么你通常不会很好,因为你对内存施加了太大的压力并最终导致代码崩溃.你可以更好地使用显式游标open x for ..和一个带有limit子句的循环中的批量提取,即fetch x bulk collect到v_ids limit 100并分批处理100-1000.