使用具有多個％rowtype字段的Oracle PL/SQL記錄表

Question

如何使用批量收集填充具有多個％rowtype字段的記錄表？

我的代碼：

 drop table child_table; 
     drop table parent_table; 
    /
     create table parent_table(pk number primary key); 
     create table child_table(pk number primary key, fk REFERENCES parent_table(pk)); 
    /
     insert into parent_table (pk) values (1); 
     insert into parent_table (pk) values (2); 

     insert into child_table (pk, fk) values (11, 1); 
     insert into child_table (pk, fk) values (21, 1); 
     insert into child_table (pk, fk) values (32, 2); 
    /
     declare 

     type rec is record 
     (
      parent parent_table%rowtype, 
      child child_table%rowtype 
     ); 
     type tbl is table of rec; 
     v_table tbl := tbl(); 

     -- this works 
     type tbl_parent is table of parent_table%rowtype; 
     v_parent_table tbl_parent := tbl_parent(); 

     begin 
     -- this works 
     select * bulk collect into v_parent_table from parent_table; 

     -- this doesn't work 
     select * bulk collect into v_table from parent_table parent 
     inner join child_table child on parent.pk = child.fk; 

     end; 

這個代碼不工作，但引發以下錯誤消息：

ORA-06550: line 13, column 30: 
PLS-00597: expression 'V_TABLE' in the INTO list is of wrong type 
ORA-06550: line 13, column 30: 
PLS-00597: expression 'V_TABLE' in the INTO list is of wrong type 
ORA-06550: line 13, column 38: 
PL/SQL: ORA-00904: : invalid identifier 
ORA-06550: line 13, column 3: 
PL/SQL: SQL Statement ignored 

這樣就ok了，Oracle說使用im了錯誤的數據類型，我同意。但如何解決它？

Answer 1

由於加入SELECT *的列與表中的列不同，您將收到錯誤消息。

使用CURSOR%rowtype：

SQL> DECLARE 
    2  CURSOR cc IS 
    3  SELECT p.pk, c.pk cpk, c.fk 
    4   FROM parent_table p 
    5   JOIN child_table c ON p.pk = c.fk; 
    6  TYPE tbl_join IS TABLE OF cc%ROWTYPE; 
    7  l_table tbl_join; 
    8 BEGIN 
    9  OPEN cc; 
10  FETCH cc BULK COLLECT INTO l_table; 
11  CLOSE cc; 
12 END; 
13/

PL/SQL procedure successfully completed 

或者不使用SELECT *：

SQL> DECLARE 
    2  TYPE tbl_child IS TABLE OF child_table%ROWTYPE; 
    3  l_table tbl_child; 
    4 BEGIN 
    5  SELECT c.* BULK COLLECT INTO l_table 
    6  FROM parent_table p 
    7  JOIN child_table c ON p.pk = c.fk; 
    8 END; 
    9/

PL/SQL procedure successfully completed