Question

我需要制作两个游标或一个游标和一个循环。但一个人必须在其他人之内。我正在尝试使用两个游标并使用for但不认识我外部游标的名称表的变量值。你可以帮帮我吗？你能建议我做这些的最佳方法吗？我是pl / sql的新手。谢谢。我把代码：

DECLARE
  TABLENAME VARCHAR2(30);
  LINK VARCHAR2(30);

  CURSOR FIRST_SELECT IS
    SELECT A.TABLE_NAME AS TABLENAME, B.LINK AS LINK  
    FROM ALL_TABLES A, TABLE_CONNECT_LINK B 
    WHERE A.TABLE_NAME=B.COMPARE_TABLE;

BEGIN
  OPEN FIRST_SELECT;
  LOOP
    FETCH FIRST_SELECT INTO TABLENAME,LINK;
    EXIT WHEN FIRST_SELECT%NOTFOUND;

    DECLARE
      PEPELU VARCHAR2(4000);
      TABLE VARCHAR2(70);
      stringconsult VARCHAR2(4000);
      COMPONENTE NUMBER(5);
      TABLE_INSERTAR VARCHAR2(30);
      COLUMN VARCHAR2(30);
      OWNER VARCHAR2(30);

      CURSOR ALL IS
        SELECT TABLE,COLUMN,OWNER FROM TABLENAME;

    BEGIN
      OPEN ALL;
      LOOP
        FETCH ALL INTO TABLE,COLUMN,OWNER;
        EXIT WHEN ALL%NOTFOUND;
            stringconsult:='select ' || owner||','|| TABLE||','|| COLUMN||' from ' || INSERTNAME || ' minus select owner, table_name, column_name from all_tab_columns@'|| LINK||'';
        DBMS_OUTPUT.PUT_LINE(stringconsult || ';');
        DBMS_OUTPUT.PUT_LINE('COMMIT;');
        COMMIT;
      END LOOP;

      CLOSE ALL;

    END;
  END LOOP;

  CLOSE FIRST_SELECT;
END;
/

光标内部的光标以及如何传递变量

0 个答案: