我有以下查询:
DECLARE
type INV_TASK_GLOBAL is varray(10) of NUMBER(20,0);
type STUDY_CASE_GLOBAL is varray(10) of NUMBER(20,0);
BEGIN
SELECT T_INVESTIGATIONTASK.ID, T_STUDYCASE.ID
into INV_TASK_GLOBAL, STUDY_CASE_GLOBAL
FROM T_VALIDATIONCARRIER
left join T_ESTIMATIONOBJECT on T_VALIDATIONCARRIER.IA_ESTIMATIONOBJECT_ID = T_ESTIMATIONOBJECT.ID
left join T_INVESTIGATIONTASK on T_ESTIMATIONOBJECT.INVESTIGATIONTASK_ID = T_INVESTIGATIONTASK.ID
left join T_STUDYCASE on T_INVESTIGATIONTASK.STUDYCASE_ID = T_STUDYCASE.ID
WHERE T_VALIDATIONCARRIER.ESTIMATIONOBJECT_ID = 940;
dbms_output.Put_line('INVESTIGATIONTASK_ID: ' || INV_TASK_GLOBAL);
dbms_output.Put_line('STUDYCASE_ID: ' || STUDY_CASE_GLOBAL);
END;
编译器告诉我,精确提取中指定的数字小于返回的行数。事实是我希望返回这些行。具体来说:我想收集所有T_INVESTIGATIONTASK.ID
和T_STUDYCASE.ID
(WHERE
子句捕获的每一行一个),将它们存储到INV_TASK_GLOBAL
和在STUDY_CASE_GLOBAL
中,然后显示返回的所有值(可能用逗号分隔)
我可能会在将来更改WHERE
条件,但无论如何,我希望为这两个变量返回的最大元素数为10。
我知道我以错误的方式使用varray数据类型:我需要某种循环和列表/数组数据类型来存储INV_TASK_GLOBAL
和STUDY_CASE_GLOBAL
变量中的所有返回值,然后打印阵列在屏幕上。你知道如何完成它吗?
答案 0 :(得分:0)
经过一些测试后,以下代码解决了我的问题:
DECLARE
type collection_id is table of NUMBER(20,0);
INV_TASK_GLOBAL collection_id := collection_id(10);
STUDY_CASE_GLOBAL collection_id := collection_id(10);
BEGIN
SELECT T_INVESTIGATIONTASK.ID, T_STUDYCASE.ID
BULK COLLECT into INV_TASK_GLOBAL, STUDY_CASE_GLOBAL
FROM T_VALIDATIONCARRIER
left join T_ESTIMATIONOBJECT on T_VALIDATIONCARRIER.IA_ESTIMATIONOBJECT_ID = T_ESTIMATIONOBJECT.ID
left join T_INVESTIGATIONTASK on T_ESTIMATIONOBJECT.INVESTIGATIONTASK_ID = T_INVESTIGATIONTASK.ID
left join T_STUDYCASE on T_INVESTIGATIONTASK.STUDYCASE_ID = T_STUDYCASE.ID
WHERE T_VALIDATIONCARRIER.ESTIMATIONOBJECT_ID = 940;
FOR indx IN 1 .. INV_TASK_GLOBAL.COUNT
LOOP
dbms_output.Put_line('INVESTIGATIONTASK_ID: ' || INV_TASK_GLOBAL(indx));
END LOOP;
FOR indx IN 1 .. STUDY_CASE_GLOBAL.COUNT
LOOP
dbms_output.Put_line('STUDY_CASE_ID: ' || STUDY_CASE_GLOBAL(indx));
END LOOP;
END;