How to change the column's position in table?

Question

hye all,
how can i change the position of column in the database
for example:
when i do query = "select column_name from all_tab_columns where table_name = upper('table_test')"
this will be the column output - "columnA, columnB, columnC, columnD"
but what i need is output like this : "columnD, columnA, columnB, columnC
i think we have to change the position of the column in the database..so, how can i do that?
thanks~

Answer 1

hi
Why dont you achieve it by using view
SQL> CREATE TABLE a (col1  NUMBER,col2   NUMBER,col3   NUMBER);
Table created.
SQL> CREATE VIEW a_view AS SELECT col3,col2,col1 FROM a;
View created.
SQL> DESC a
Name                            Null?    Type
COL1                                     NUMBER
COL2                                     NUMBER
COL3                                     NUMBER
SQL> DESC a_view
Name                            Null?    Type
COL3                                     NUMBER
COL2                                     NUMBER
COL1                                     NUMBER
SQL> INSERT INTO a VALUES (1,2,3);
1 row created.
SQL> SELECT * FROM a;
     COL1      COL2      COL3
        1         2         3
SQL> SELECT * FROM a_view;
     COL3      COL2      COL1
        3         2         1Khurram Siddiqui
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