如何在Oracle PL SQL中定义类似结构的字典？

Question

如何在PL/SQL中定义以下结构：

包含多行的字符串列表。

实施例：

'User A' 
    --> 
     (1) 
      --> 
       1 
     (2) 
      --> 
       2 


'User B' 
    --> 
     (1) 
      --> 
       0 
     (2) 
      --> 
       9 

的整数被定义为：

TYPE number_arry IS TABLE OF NUMBER INDEX BY BINARY_INTEGER; 

如何定义整个结构？

我要填写此表中这种结构：

RowId | User_A | User_B 
------+--------+-------- 
1  |  1 |  0 
2  |  2 |  0 
3  |  3 |  9 

有了这些语句：

CURSOR c1 
     IS 
      SELECT User_A, User_B FROM my_table; 

OPEN c1; 
    LOOP 
     FETCH c1 
      BULK COLLECT INTO 
       my_dict('User A'), 
       my_dict('User B') 

     LIMIT 1000; 

     EXIT WHEN c1%NOTFOUND; 
    END LOOP; 

Answer 1

你可以用以下结构：

SQL> CREATE TABLE my_table AS 
    2  SELECT 1 user_a, 0 user_b FROM dual 
    3  UNION ALL SELECT 2, 0 FROM dual 
    4  UNION ALL SELECT 3, 9 FROM dual; 

Table created 

SQL> DECLARE 
    2  CURSOR c1 IS 
    3  SELECT User_A, User_B FROM my_table; 
    4  TYPE number_arry IS TABLE OF NUMBER INDEX BY BINARY_INTEGER; 
    5  TYPE dictionary_type IS TABLE OF number_arry INDEX BY VARCHAR2(30); 
    6  l_dico dictionary_type; 
    7 BEGIN 
    8  OPEN c1; 
    9  LOOP 
10  FETCH c1 BULK COLLECT 
11   INTO l_dico('User A'), l_dico('User B') LIMIT 1000; 
12  EXIT WHEN c1%NOTFOUND; 
13  END LOOP; 
14  CLOSE c1; 
15 END; 
16/

PL/SQL procedure successfully completed