Oracle過程將數據視圖複製到表

Question

我需要從my_view（即基於3個連接的表）複製或插入數據。在此之前，我已根據my_view創建了表my_table。 對於我使用以下步驟：

create or replace procedure view_copy(
      my_view in varchar2, 
      my_table in varchar2) 
is 
begin 
    execute immediate 'insert into '||my_table||' (select * from '||my_view||')'; 
end; 

的數據不會被複制到my_table。是否有可能將數據從視圖複製到表格？我怎樣才能以不同的方式編寫程序？

Answer 1

您的程序有效;如果您在目標表中找不到數據，也許您應該檢查一下您的視圖。 一個簡單的測試你的程序：

SQL> create table table1 (id1 number) 
    2/

Table created. 

SQL> create table table2 (id2 number) 
    2/

Table created. 

SQL> create or replace view v_t1_t2 as select id1, id2 from table1 cross join table2 
    2/

View created. 

SQL> create table table1_2 (id1 number, id2 number) 
    2/

Table created. 

SQL> create or replace procedure view_copy(
    2    my_view in varchar2, 
    3    my_table in varchar2) 
    4 is 
    5 begin 
    6  execute immediate 'insert into '||my_table||' (select * from '||my_view||')'; 
    7 end; 
    8/

Procedure created. 

SQL> insert into table1 values (1); 

1 row created. 

SQL> insert into table2 values (2); 

1 row created. 

SQL> exec view_copy('v_t1_t2', 'table1_2'); 

PL/SQL procedure successfully completed. 

SQL> select * from table1_2; 

     ID1  ID2 
---------- ---------- 
     1   2