问题描述
我有一个关于在 Oracle SQL 函数中使用集合的问题.
I have a question regarding using of collections in Oracle SQL functions.
包中有类型定义:
/* Types of package*/
create or replace PACKAGE "test" AS
TYPE type_record_1 IS record ( id_num NUMBER , timestamp_num NUMBER,value NUMBER);
TYPE type_table_1 IS TABLE OF type_record_1;
TYPE type_record_2 IS record ( id_num NUMBER , timestamp_num NUMBER,pValue NUMBER);
TYPE type_table_2 IS TABLE OF type_record_2;
END test;
问题出在函数_2.function_2 使用 function_1 的输出.当我尝试在 function_2 中选择时出现错误消息.错误消息SQL 语句中不允许使用本地集合类型".
Problem is in functions_2. function_2 uses output from function_1. The error message occurs when I try select in function_2. Error message "local collection types not allowed in SQL statements".
你能帮忙吗?在函数中使用集合有什么问题?
Could you please help? What is wrong with using of collections in functions?
/*function 1*/
FUNCTION function_1
RETURN type_table_1
IS
table_1 type_table_1;
BEGIN
-- select values from
SELECT id_num, timestamp_num, value --type_record_1 (id_num, timestamp_num, value)
BULK COLLECT INTO table_1
FROM (
SELECT
l.id_num,
EXTRACT(hour from end_time) * 60 + EXTRACT(minute from end_time) as timestamp_num,
l.value
FROM INTERVAL_F l
WHERE id_num IN (SELECT id_num FROM table_rev)
);
RETURN table_1;
END function_1;
/*function 2*/
FUNCTION function_2
(
table_1 IN type_table_1
)
RETURN type_table_2
IS
table_2 type_table_2;
BEGIN
SELECT type_record_2(id_num , timestamp_num , pValue)
BULK COLLECT INTO table_2 FROM (
SELECT id_num
, timestamp_num
, value as pValue
FROM table(table_1) -- ERROR IS HERE
);
RETURN table_2;
END function_2;
推荐答案
为了达到这个目的,你应该使用类似的东西:
To achive that you should use something like:
创建或替换类型 type_record_1.../
CREATE OR REPLACE TYPE type_record_1... /
创建或替换类型 type_table_1 作为 type_record_1 的表;/
CREATE OR REPLACE TYPE type_table_1 AS TABLE OF type_record_1; /
Oracle 不允许将包中声明的类型转换为表.一直到 11 才谈 Oracle,还没查 12c 的新特性 :(.
Oracle does not allow types declared in package to be casted as table. I talk about Oracle until 11, still not check 12c new features :(.
这篇关于SQL 语句中不允许使用本地集合类型的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!