此问题与this
大致相同 在包标题中：
声明了以下行类型：
TYPE exch_row IS RECORD(
currency_cd VARCHAR2(9),
exch_rt_eur NUMBER,
exch_rt_usd NUMBER);
而这个表类型：
TYPE exch_tbl IS TABLE OF exch_row INDEX BY BINARY_INTEGER;
添加了一个变量：
exch_rt exch_tbl;
在包体中：
用一些数据填充此表变量。
在包体中的过程中：
我想使用以下语句：
CURSOR c0 IS
SELECT i.*, rt.exch_rt_eur, rt.exch_rt_usd
FROM item i, exch_rt rt
WHERE i.currency = rt.exchange_cd
如何在Oracle中执行此操作？
备注
实际上我正在寻找MSSQL中的'表变量'解决方案：
DECLARE @exch_tbl TABLE
(
currency_cd VARCHAR(9),
exch_rt_eur NUMBER,
exch_rt_usd NUMBER)
)
在我的StoredProcedure中使用此表变量。
答案 0 :(得分：15)
在SQL中，您只能使用在架构级别定义的表类型（不在包或过程级别），并且无法在架构级别定义索引表（关联数组）。所以 - 你必须像这样定义嵌套表
create type exch_row as object (
currency_cd VARCHAR2(9),
exch_rt_eur NUMBER,
exch_rt_usd NUMBER);
create type exch_tbl as table of exch_row;
然后你可以在带有TABLE运算符的SQL中使用它，例如：
declare
l_row exch_row;
exch_rt exch_tbl;
begin
l_row := exch_row('PLN', 100, 100);
exch_rt := exch_tbl(l_row);
for r in (select i.*
from item i, TABLE(exch_rt) rt
where i.currency = rt.currency_cd) loop
-- your code here
end loop;
end;
/
答案 1 :(得分：14)
在Oracle 12C之前，您无法从PL / SQL定义的表中进行选择，只能从基于SQL类型的表中进行选择，如下所示：
CREATE OR REPLACE TYPE exch_row AS OBJECT(
currency_cd VARCHAR2(9),
exch_rt_eur NUMBER,
exch_rt_usd NUMBER);
CREATE OR REPLACE TYPE exch_tbl AS TABLE OF exch_row;
在Oracle 12C中，现在可以从包规范中定义的PL / SQL表中进行选择。
答案 2 :(得分：4)
你不能在包内的单个查询中执行它 - 你不能混合SQL和PL / SQL类型，并且需要在Tony层中定义类型，如Tony，Marcin和Thio所说。
如果您确实希望在本地完成此操作，并且可以通过VARCHAR而不是BINARY_INTEGER索引表类型，则可以执行以下操作：
-- dummy ITEM table as we don't know what the real ones looks like
create table item(
item_num number,
currency varchar2(9)
)
/
insert into item values(1,'GBP');
insert into item values(2,'AUD');
insert into item values(3,'GBP');
insert into item values(4,'AUD');
insert into item values(5,'CDN');
create package so_5165580 as
type exch_row is record(
exch_rt_eur number,
exch_rt_usd number);
type exch_tbl is table of exch_row index by varchar2(9);
exch_rt exch_tbl;
procedure show_items;
end so_5165580;
/
create package body so_5165580 as
procedure populate_rates is
rate exch_row;
begin
rate.exch_rt_eur := 0.614394;
rate.exch_rt_usd := 0.8494;
exch_rt('GBP') := rate;
rate.exch_rt_eur := 0.9817;
rate.exch_rt_usd := 1.3572;
exch_rt('AUD') := rate;
end;
procedure show_items is
cursor c0 is
select i.*
from item i;
begin
for r0 in c0 loop
if exch_rt.exists(r0.currency) then
dbms_output.put_line('Item ' || r0.item_num
|| ' Currency ' || r0.currency
|| ' EUR ' || exch_rt(r0.currency).exch_rt_eur
|| ' USD ' || exch_rt(r0.currency).exch_rt_usd);
else
dbms_output.put_line('Item ' || r0.item_num
|| ' Currency ' || r0.currency
|| ' ** no rates defined **');
end if;
end loop;
end;
begin
populate_rates;
end so_5165580;
/
因此，在您的循环中，无论您希望使用r0.exch_rt_eur的哪个位置，您都可以使用exch_rt(r0.currency).exch_rt_eur，而使用相同的美元。从匿名块进行测试：
begin
so_5165580.show_items;
end;
/
Item 1 Currency GBP EUR .614394 USD .8494
Item 2 Currency AUD EUR .9817 USD 1.3572
Item 3 Currency GBP EUR .614394 USD .8494
Item 4 Currency AUD EUR .9817 USD 1.3572
Item 5 Currency CDN ** no rates defined **
根据Stef发布的答案，这根本不需要在一个包中;使用insert语句可以获得相同的结果。假设EXCH保持其他货币对欧元的汇率，包括currency_key=1的美元：
insert into detail_items
with rt as (select c.currency_cd as currency_cd,
e.exch_rt as exch_rt_eur,
(e.exch_rt / usd.exch_rt) as exch_rt_usd
from exch e,
currency c,
(select exch_rt from exch where currency_key = 1) usd
where c.currency_key = e.currency_key)
select i.doc,
i.doc_currency,
i.net_value,
i.net_value / rt.exch_rt_usd AS net_value_in_usd,
i.net_value / rt.exch_rt_eur as net_value_in_euro
from item i
join rt on i.doc_currency = rt.currency_cd;
物品价值19.99英镑和25.00澳元，你得到detail_items：
DOC DOC_CURRENCY NET_VALUE NET_VALUE_IN_USD NET_VALUE_IN_EURO
--- ------------ ----------------- ----------------- -----------------
1 GBP 19.99 32.53611 23.53426
2 AUD 25 25.46041 18.41621
如果您希望货币内容更易于重复使用，您可以创建一个视图：
create view rt as
select c.currency_cd as currency_cd,
e.exch_rt as exch_rt_eur,
(e.exch_rt / usd.exch_rt) as exch_rt_usd
from exch e,
currency c,
(select exch_rt from exch where currency_key = 1) usd
where c.currency_key = e.currency_key;
然后使用以下值插入：
insert into detail_items
select i.doc,
i.doc_currency,
i.net_value,
i.net_value / rt.exch_rt_usd AS net_value_in_usd,
i.net_value / rt.exch_rt_eur as net_value_in_euro
from item i
join rt on i.doc_currency = rt.currency_cd;
答案 3 :(得分：1)
感谢您在此问题上的所有帮助。我会在这里发布我的解决方案：
包标题
CREATE OR REPLACE PACKAGE X IS
TYPE exch_row IS RECORD(
currency_cd VARCHAR2(9),
exch_rt_eur NUMBER,
exch_rt_usd NUMBER);
TYPE exch_tbl IS TABLE OF X.exch_row;
FUNCTION GetExchangeRate RETURN X.exch_tbl PIPELINED;
END X;
套餐正文
CREATE OR REPLACE PACKAGE BODY X IS
FUNCTION GetExchangeRate RETURN X.exch_tbl
PIPELINED AS
exch_rt_usd NUMBER := 1.0; --todo
rw exch_row;
BEGIN
FOR rw IN (SELECT c.currency_cd AS currency_cd, e.exch_rt AS exch_rt_eur, (e.exch_rt / exch_rt_usd) AS exch_rt_usd
FROM exch e, currency c
WHERE c.currency_key = e.currency_key
) LOOP
PIPE ROW(rw);
END LOOP;
END;
PROCEDURE DoIt IS
BEGIN
DECLARE
CURSOR c0 IS
SELECT i.DOC,
i.doc_currency,
i.net_value,
i.net_value / rt.exch_rt_usd AS net_value_in_usd,
i.net_value / rt.exch_rt_eur AS net_value_in_euro,
FROM item i, (SELECT * FROM TABLE(X.GetExchangeRate())) rt
WHERE i.doc_currency = rt.currency_cd;
TYPE c0_type IS TABLE OF c0%ROWTYPE;
items c0_type;
BEGIN
OPEN c0;
LOOP
FETCH c0 BULK COLLECT
INTO items LIMIT batchsize;
EXIT WHEN items.COUNT = 0;
FORALL i IN items.FIRST .. items.LAST SAVE EXCEPTIONS
INSERT INTO detail_items VALUES items (i);
END LOOP;
CLOSE c0;
COMMIT;
EXCEPTION
WHEN OTHERS THEN
RAISE;
END;
END;
END X;
请查看。
答案 4 :(得分：0)
在包装规格中，您可以做提到的所有事情，但不确定INDEX BY BINARY_INTEGER;
在程序包正文中：
在声明中初始化表：
exch_rt exch_tbl := exch_tbl();
为了将记录添加到本地集合，可以在开始-结束块中执行以下操作：
exch_rt.extend;
one_row.exch_rt_usd := 2;
one_row.exch_rt_eur := 1;
one_row.currency_cd := 'dollar';
exch_rt(1) := one_row; -- 1 - number of row in the table - you can put a variable which will be incremented inside a loop
为了从此表中获取数据，可以在包体内使用：
select exch_rt_usd, exch_rt_eur, currency_cd from table(exch_rt)
享受！
P.S。对不起，我晚回答了：D