所以我一直有这个错误，而且我对于发生了什么一无所知。我已经用Google搜索了一些关于此错误的问题，但没有任何效果。我只想让它运行所以我可以完成我的项目。
public abstract class AbstractListMM<K,V> implements IMiniMap<K,V>{
private List <K> keys;
private List <V> values;
// Initialize the lists of keys and values with a concrete instance
public AbstractListMM(List <K> keys, List <V> values)
{
this.keys = keys;
this.values = values;
}
// Return the number of bindings based on the size of the key list
public int size()
{
return keys.size();
}
// Based on the lists size
public boolean isEmpty()
{
return (keys.isEmpty() && values.isEmpty());
}
// Make a (shallow) copy of the keys list and return it
public List<K> keys()
{
List<K> newKeys = this.keys;
return newKeys;
}
// Make a (shallow) copy of the vals list and return it
public List<V> values()
{
List<V> values = this.values;
return values;
}
// Use this.indexOf() to locate the given key as quickly as possible
public boolean contains(K key)
{
if(this.indexOf(key) < 0)
return false;
else
return true;
}
// Use this.indexOf() to determine if a given key is present and
// return its associated value; return null if the key is not
// present
//
// TARGET COMPLEXITY: Same speed as indexOf()
public V get(K key)
{
if(this.indexOf(key) < 0)
return null;
else
{
for(int i = 0; i < this.values.size(); i++)
{
}
}
}
// Use this.indexOf() to determine the location of the given
// key/value and remove it from the corresponding lists
//
// TARGET COMPLEXITY: O(N) due to list elements shifting
public V remove(K key);
// Find the numeric index of the key as quickly as possible based on
// the type of ListMM being implemented. Return a negative number if
// the given key is not present.
public abstract int indexOf(K key);
// Associate the given key with the given value in the
// lists. Creates an ordering of keys that is compatible with how
// indexOf() works to locate keys.
public abstract V put(K key, V value);
}
错误： 开始低谷;结束; * 第1行的错误： ORA-06550：第1行第9栏： PLS-00201：标识符＆＃39; LOWINVENTORY＆＃39;必须申报 ORA-06550：第1行，第7列： PL / SQL：忽略语句
修改
create or replace procedure LOWINVENTORY is
--Variables
ID number;
itemNamed char(15);
description char(20);
startQty number;
--Define inventory item cursor
cursor nextItem is
select inventory.itemID, inventory.itemName, inventory.description, inventory.startQty;
from inventory
where inventory.startQty < 5;
begin
open nextItem;
fetch netxtItem into ID, itemNamed, description, startQty;
if nextItem%notfound then
dbms_output.put_line('No items in need of reordering.');
else
dbms_output.put_line('*********************');
dbms_output.put_line('++Inventory Report++');
dbms_output.put_line('*********************');
dbms_output.put_line('Item Name---ID------Description----------Quantity');
loop
dbms_output.put_line(itemNamed||'-'||ID||'-'||description||'-'||startQty);
fetch netxtItem into ID, itemNamed, description, startQty;
if nextItem%notfound then
dbms_output.put_line('************END REPORT*************');
exit when nextItem%notfound;
end loop;
end lowInventory;
表创建：
INSERT INTO inventory(itemID, itemLocation, itemName, description, typicalPrice, startQty)
VALUES(24548576, 'toolbox1', 'wrench', 'turns bolts', 14.00, 6);
INSERT INTO inventory(itemID, itemLocation, itemName, description, typicalPrice, startQty)
VALUES(83742345, 'toolbox1', 'pliers', 'grabs stuff', 11.00, 4);
INSERT INTO inventory(itemID, itemLocation, itemName, description, typicalPrice, startQty)
VALUES(39287426, 'chest2', 'jigsaw', 'cuts stuff', 28.00, 3);
INSERT INTO inventory(itemID, itemLocation, itemName, description, typicalPrice, startQty)
VALUES(48927349, 'chest1', 'blowtorch', 'torches stuff', 330.00, 2);
INSERT INTO inventory(itemID, itemLocation, itemName, description, typicalPrice, startQty)
VALUES(85463455, 'bench3', 'oil filter', 'filters stuff', 16.00, 20);
答案 0 :(得分：1)
你的代码充满了愚蠢的错误， 首先，
select inventory.itemID, inventory.itemName,
inventory.description, inventory.startQty; --> semicolan here, the statment doesnt end
from inventory
where inventory.startQty < 5;
其次，
cursor nextItem is --> using nextItem as name in cursor but "netxtItem" while opening it, a typo
第三，
如果在else部分内，则无止境，循环
以下是已编译的过程， 我创建了库存表，在程序中只使用了4列来编译程序
SQL> create or replace procedure LOWINVENTORY is
2
3 --Variables
4 ID number;
5 itemNamed char(15);
6 description char(20);
7 startQty number;
8
9 --Define inventory item cursor
10 cursor nextItem is
11 select inventory.itemID, inventory.itemName, inventory.description, inventory.startQty
12 from inventory
13 where inventory.startQty < 5;
14
15 begin
16 open nextItem;
17 fetch nextItem into ID, itemNamed, description, startQty;
18 if nextItem%notfound then
19 dbms_output.put_line('No items in need of reordering.');
20 else
21 dbms_output.put_line('*********************');
22 dbms_output.put_line('++Inventory Report++');
23 dbms_output.put_line('*********************');
24 dbms_output.put_line('Item Name---ID------Description----------Quantity');
25 loop
26 dbms_output.put_line(itemNamed||'-'||ID||'-'||description||'-'||startQty);
27 fetch nextItem into ID, itemNamed, description, startQty;
28 if nextItem%notfound then
29 dbms_output.put_line('************END REPORT*************');
30 exit when nextItem%notfound;
31 end if;
32 end loop;
33 end if;
34
35 end lowInventory;
36 /
Procedure created.
SQL>
修改
SQL> insert into inventory (itemid,itemname,description,startqty) values (1,'abc','descp1',1) ;
1 row created.
SQL> insert into inventory (itemid,itemname,description,startqty) values (2,'abcd','descp2',1) ;
1 row created.
SQL> set serveroutput on;
SQL> exec lowInventory;
*********************
++Inventory Report++
*********************
Item Name---ID------Description----------Quantity
abc -1-descp1 -1
abcd -2-descp2 -1
************END REPORT*************
PL/SQL procedure successfully completed.
SQL>
编辑2
包含您提供的数据
SQL> exec lowinventory;
*********************
++Inventory Report++
*********************
Item Name---ID------Description----------Quantity
jigsaw -39287426-cuts stuff -3
pliers -83742345-grabs stuff -4
jigsaw -39287426-cuts stuff -3
blowtorch -48927349-torches stuff -2
************END REPORT*************
PL/SQL procedure successfully completed.