oracle调整表中列顺序

当前显示

SQL> select * from test;

A                    B                    C
-------------------- -------------------- --------------------
you                  pig                  are

通过修改sys.col$表来改变表中列的顺序

SQL> SELECT owner,object_name,object_id FROM ALL_OBJECTS WHERE OBJECT_NAME='TEST';

OWNER                          OBJECT_NAME                     OBJECT_ID
------------------------------ ------------------------------ ----------
SYS                            TEST                                88842

SQL> select obj#,col#,name from sys.col$ where obj# =88842 order by col#;

      OBJ#       COL# NAME
---------- ---------- ------------------------------
     88842          1 A
     88842          2 B
     88842          3 C

SQL> update sys.col$ set col#=2 where obj# =88842 and name='C';

1 row updated.

SQL> update sys.col$ set col#=3 where obj# =88842 and name='B';

1 row updated.

SQL> commit;

Commit complete.

SQL> select * from test;

A                    C                    B
-------------------- -------------------- --------------------
you                  are                  pig

SQL>
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